76456640660 has 24 divisors (see below), whose sum is σ = 160735228416. Its totient is φ = 30549078560.

The previous prime is 76456640627. The next prime is 76456640669. The reversal of 76456640660 is 6604665467.

It is a junction number, because it is equal to n+sod(n) for n = 76456640599 and 76456640608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76456640669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2079932 + ... + 2116371.

It is an arithmetic number, because the mean of its divisors is an integer number (6697301184).

Almost surely, 2^76456640660 is an apocalyptic number.

It is an amenable number.

76456640660 is an abundant number, since it is smaller than the sum of its proper divisors (84278587756).

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

76456640660 is a wasteful number, since it uses less digits than its factorization.

76456640660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4197223 (or 4197221 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 76456640660 in words is "seventy-six billion, four hundred fifty-six million, six hundred forty thousand, six hundred sixty".