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8140375061 = 71389454671
BaseRepresentation
bin1111001010011010…
…00100010000010101
3210000022112220021122
413211031010100111
5113132414000221
63423432253325
7405504021620
oct74515042025
923008486248
108140375061
1134a80362a5
1216b2241245
139c96520a0
145731a8db7
153299c7eab
hex1e5344415

8140375061 has 8 divisors (see below), whose sum is σ = 10018923264. Its totient is φ = 6440736240.

The previous prime is 8140375039. The next prime is 8140375079. The reversal of 8140375061 is 1605730418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8140375061 - 222 = 8136180757 is a prime.

It is a super-2 number, since 2×81403750612 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8140375091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44727245 + ... + 44727426.

It is an arithmetic number, because the mean of its divisors is an integer number (1252365408).

Almost surely, 28140375061 is an apocalyptic number.

It is an amenable number.

8140375061 is a deficient number, since it is larger than the sum of its proper divisors (1878548203).

8140375061 is a wasteful number, since it uses less digits than its factorization.

8140375061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89454691.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 8140375061 is about 90224.0270715068. The cubic root of 8140375061 is about 2011.6301603433.

The spelling of 8140375061 in words is "eight billion, one hundred forty million, three hundred seventy-five thousand, sixty-one".

Divisors: 1 7 13 91 89454671 626182697 1162910723 8140375061