76566711540 has 72 divisors (see below), whose sum is σ = 235648314720. Its totient is φ = 18561625280.

The previous prime is 76566711539. The next prime is 76566711547. The reversal of 76566711540 is 4511766567.

It is a super-2 number, since 2×76566711540² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 76566711540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76566711547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5265930 + ... + 5280449.

It is an arithmetic number, because the mean of its divisors is an integer number (3272893260).

Almost surely, 2^76566711540 is an apocalyptic number.

It is an amenable number.

76566711540 is an abundant number, since it is smaller than the sum of its proper divisors (159081603180).

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

76566711540 is a wasteful number, since it uses less digits than its factorization.

76566711540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10546413 (or 10546400 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 76566711540 in words is "seventy-six billion, five hundred sixty-six million, seven hundred eleven thousand, five hundred forty".