76728868621740 has 72 divisors (see below), whose sum is σ = 233299710549360. Its totient is φ = 20412198601344.

The previous prime is 76728868621679. The next prime is 76728868621759. The reversal of 76728868621740 is 4712686882767.

76728868621740 is a `hidden beast` number, since 7 + 67 + 288 + 68 + 62 + 174 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 508601779 + ... + 508752618.

It is an arithmetic number, because the mean of its divisors is an integer number (3240273757630).

Almost surely, 2^{76728868621740} is an apocalyptic number.

It is an amenable number.

76728868621740 is an abundant number, since it is smaller than the sum of its proper divisors (156570841927620).

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

76728868621740 is a wasteful number, since it uses less digits than its factorization.

76728868621740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017354831 (or 1017354826 counting only the distinct ones).

The product of its (nonzero) digits is 606928896, while the sum is 72.

The spelling of 76728868621740 in words is "seventy-six trillion, seven hundred twenty-eight billion, eight hundred sixty-eight million, six hundred twenty-one thousand, seven hundred forty".