77012389538 has 16 divisors (see below), whose sum is σ = 132026094720. Its totient is φ = 33004095936.

The previous prime is 77012389453. The next prime is 77012389577. The reversal of 77012389538 is 83598321077.

It is a self number, because there is not a number n which added to its sum of digits gives 77012389538.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368195 + ... + 538137.

It is an arithmetic number, because the mean of its divisors is an integer number (8251630920).

Almost surely, 2^77012389538 is an apocalyptic number.

77012389538 is a deficient number, since it is larger than the sum of its proper divisors (55013705182).

77012389538 is a wasteful number, since it uses less digits than its factorization.

77012389538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202321.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 77012389538 in words is "seventy-seven billion, twelve million, three hundred eighty-nine thousand, five hundred thirty-eight".