71507517055 has 32 divisors (see below), whose sum is σ = 94674303360. Its totient is φ = 51522531840.

The previous prime is 71507517001. The next prime is 71507517101. The reversal of 71507517055 is 55071570517.

It is not a de Polignac number, because 71507517055 - 2¹¹ = 71507515007 is a prime.

It is a super-2 number, since 2×71507517055² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 566206 + ... + 680884.

It is an arithmetic number, because the mean of its divisors is an integer number (2958571980).

Almost surely, 2^71507517055 is an apocalyptic number.

71507517055 is a deficient number, since it is larger than the sum of its proper divisors (23166786305).

71507517055 is a wasteful number, since it uses less digits than its factorization.

71507517055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114931.

The product of its (nonzero) digits is 214375, while the sum is 43.

The spelling of 71507517055 in words is "seventy-one billion, five hundred seven million, five hundred seventeen thousand, fifty-five".