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1005010100050 = 2521110118091991
BaseRepresentation
bin11101001111111110100…
…01010001111101010010
310120002002212210212201011
432213333101101331102
5112431230041200200
62045410102201134
7132416041620505
oct16477721217522
93502085725634
101005010100050
1135824a001250
1214293ba231aa
1373a06252698
14368dd9b713c
151b2215155ba
hexe9ff451f52

1005010100050 has 48 divisors (see below), whose sum is σ = 2059447633344. Its totient is φ = 361839800000.

The previous prime is 1005010100047. The next prime is 1005010100051. The reversal of 1005010100050 is 500010105001.

It is a super-2 number, since 2×10050101000502 (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1005010100050.

It is not an unprimeable number, because it can be changed into a prime (1005010100051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8990446 + ... + 9101545.

It is an arithmetic number, because the mean of its divisors is an integer number (42905159028).

Almost surely, 21005010100050 is an apocalyptic number.

1005010100050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1005010100050 is an abundant number, since it is smaller than the sum of its proper divisors (1054437533294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1005010100050 is a wasteful number, since it uses less digits than its factorization.

1005010100050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18092115 (or 18092110 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 13.

Adding to 1005010100050 its reverse (500010105001), we get a palindrome (1505020205051).

The spelling of 1005010100050 in words is "one trillion, five billion, ten million, one hundred thousand, fifty".

Divisors: 1 2 5 10 11 22 25 50 55 101 110 202 275 505 550 1010 1111 2222 2525 5050 5555 11110 27775 55550 18091991 36183982 90459955 180919910 199011901 398023802 452299775 904599550 995059505 1827291091 1990119010 3654582182 4975297525 9136455455 9950595050 18272910910 20100202001 40200404002 45682277275 91364554550 100501010005 201002020010 502505050025 1005010100050