71512577052 has 36 divisors (see below), whose sum is σ = 194105567880. Its totient is φ = 20432164704.

The previous prime is 71512577027. The next prime is 71512577083. The reversal of 71512577052 is 25077521517.

It is a super-2 number, since 2×71512577052² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 71512576995 and 71512577013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60809427 + ... + 60810602.

It is an arithmetic number, because the mean of its divisors is an integer number (5391821330).

Almost surely, 2^71512577052 is an apocalyptic number.

It is an amenable number.

71512577052 is an abundant number, since it is smaller than the sum of its proper divisors (122592990828).

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

71512577052 is a wasteful number, since it uses less digits than its factorization.

71512577052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121620050 (or 121620041 counting only the distinct ones).

The product of its (nonzero) digits is 171500, while the sum is 42.

The spelling of 71512577052 in words is "seventy-one billion, five hundred twelve million, five hundred seventy-seven thousand, fifty-two".