76565638765 has 32 divisors (see below), whose sum is σ = 118245335040. Its totient is φ = 46189569600.

The previous prime is 76565638763. The next prime is 76565638783. The reversal of 76565638765 is 56783656567.

It is not a de Polignac number, because 76565638765 - 2¹ = 76565638763 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 76565638697 and 76565638706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76565638763) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3195675 + ... + 3219544.

It is an arithmetic number, because the mean of its divisors is an integer number (3695166720).

Almost surely, 2^76565638765 is an apocalyptic number.

It is an amenable number.

76565638765 is a deficient number, since it is larger than the sum of its proper divisors (41679696275).

76565638765 is a wasteful number, since it uses less digits than its factorization.

76565638765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6415273.

The product of its digits is 190512000, while the sum is 64.

The spelling of 76565638765 in words is "seventy-six billion, five hundred sixty-five million, six hundred thirty-eight thousand, seven hundred sixty-five".