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71010012001 = 138403513067
BaseRepresentation
bin100001000100010000…
…1101100101101100001
320210021210212100212111
41002020201230231201
52130412030341001
652342130555321
75062460100025
oct1021041545541
9223253770774
1071010012001
112812a334035
1211919138b41
13690877b9a6
143618c0c385
151ca911d851
hex108886cb61

71010012001 has 4 divisors (see below), whose sum is σ = 71010663472. Its totient is φ = 71009360532.

The previous prime is 71010011983. The next prime is 71010012023. The reversal of 71010012001 is 10021001017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 71010012001 - 221 = 71007914849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71010012041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118131 + ... + 394936.

It is an arithmetic number, because the mean of its divisors is an integer number (17752665868).

Almost surely, 271010012001 is an apocalyptic number.

It is an amenable number.

71010012001 is a deficient number, since it is larger than the sum of its proper divisors (651471).

71010012001 is a wasteful number, since it uses less digits than its factorization.

71010012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651470.

The product of its (nonzero) digits is 14, while the sum is 13.

Adding to 71010012001 its reverse (10021001017), we get a palindrome (81031013018).

The spelling of 71010012001 in words is "seventy-one billion, ten million, twelve thousand, one".

Divisors: 1 138403 513067 71010012001