77039677776 has 40 divisors (see below), whose sum is σ = 205439144704. Its totient is φ = 24851508480.

The previous prime is 77039677763. The next prime is 77039677837. The reversal of 77039677776 is 67777693077.

It is a super-2 number, since 2×77039677776² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25885501 + ... + 25888476.

Almost surely, 2^77039677776 is an apocalyptic number.

It is an amenable number.

77039677776 is an abundant number, since it is smaller than the sum of its proper divisors (128399466928).

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

77039677776 is a wasteful number, since it uses less digits than its factorization.

77039677776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51774019 (or 51774013 counting only the distinct ones).

The product of its (nonzero) digits is 114354828, while the sum is 66.

The spelling of 77039677776 in words is "seventy-seven billion, thirty-nine million, six hundred seventy-seven thousand, seven hundred seventy-six".