76614720640 has 32 divisors (see below), whose sum is σ = 183157068060. Its totient is φ = 30645888000.

The previous prime is 76614720613. The next prime is 76614720697. The reversal of 76614720640 is 4602741667.

It can be written as a sum of positive squares in 2 ways, for example, as 71605478464 + 5009242176 = 267592^2 + 70776^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59854611 + ... + 59855890.

Almost surely, 2^76614720640 is an apocalyptic number.

It is an amenable number.

76614720640 is an abundant number, since it is smaller than the sum of its proper divisors (106542347420).

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

76614720640 is a wasteful number, since it uses less digits than its factorization.

76614720640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119710520 (or 119710508 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 76614720640 in words is "seventy-six billion, six hundred fourteen million, seven hundred twenty thousand, six hundred forty".