77941235651856 has 20 divisors (see below), whose sum is σ = 201348192100752. Its totient is φ = 25980411883936.

The previous prime is 77941235651827. The next prime is 77941235651893. The reversal of 77941235651856 is 65815653214977.

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, 811887871326 + ... + 811887871421.

Almost surely, 2^{77941235651856} is an apocalyptic number.

It is an amenable number.

77941235651856 is an abundant number, since it is smaller than the sum of its proper divisors (123406956448896).

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

77941235651856 is a wasteful number, since it uses less digits than its factorization.

77941235651856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623775742758 (or 1623775742752 counting only the distinct ones).

The product of its digits is 381024000, while the sum is 69.

The spelling of 77941235651856 in words is "seventy-seven trillion, nine hundred forty-one billion, two hundred thirty-five million, six hundred fifty-one thousand, eight hundred fifty-six".