71517110720 has 56 divisors (see below), whose sum is σ = 185781958128. Its totient is φ = 26006220800.

The previous prime is 71517110719. The next prime is 71517110737. The reversal of 71517110720 is 2701171517.

It is a super-2 number, since 2×71517110720² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10155161 + ... + 10162200.

Almost surely, 2^71517110720 is an apocalyptic number.

It is an amenable number.

71517110720 is an abundant number, since it is smaller than the sum of its proper divisors (114264847408).

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

71517110720 is a wasteful number, since it uses less digits than its factorization.

71517110720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20317389 (or 20317379 counting only the distinct ones).

The product of its (nonzero) digits is 3430, while the sum is 32.

The spelling of 71517110720 in words is "seventy-one billion, five hundred seventeen million, one hundred ten thousand, seven hundred twenty".