76981990855 has 32 divisors (see below), whose sum is σ = 115325637120. Its totient is φ = 47925198720.

The previous prime is 76981990801. The next prime is 76981990879. The reversal of 76981990855 is 55809918967.

It is not a de Polignac number, because 76981990855 - 2⁷ = 76981990727 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159376 + ... + 423514.

It is an arithmetic number, because the mean of its divisors is an integer number (3603926160).

Almost surely, 2^76981990855 is an apocalyptic number.

76981990855 is a deficient number, since it is larger than the sum of its proper divisors (38343646265).

76981990855 is a wasteful number, since it uses less digits than its factorization.

76981990855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264919.

The product of its (nonzero) digits is 48988800, while the sum is 67.

The spelling of 76981990855 in words is "seventy-six billion, nine hundred eighty-one million, nine hundred ninety thousand, eight hundred fifty-five".