77806212103728 has 30 divisors (see below), whose sum is σ = 217749329707364. Its totient is φ = 25935404034528.

The previous prime is 77806212103709. The next prime is 77806212103757. The reversal of 77806212103728 is 82730121260877.

77806212103728 is a `hidden beast` number, since 7 + 7 + 8 + 0 + 621 + 2 + 1 + 0 + 3 + 7 + 2 + 8 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270160458550 + ... + 270160458837.

Almost surely, 2^{77806212103728} is an apocalyptic number.

It is an amenable number.

77806212103728 is an abundant number, since it is smaller than the sum of its proper divisors (139943117603636).

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

77806212103728 is a wasteful number, since it uses less digits than its factorization.

77806212103728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540320917401 (or 540320917392 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 77806212103728 in words is "seventy-seven trillion, eight hundred six billion, two hundred twelve million, one hundred three thousand, seven hundred twenty-eight".