77776671036 has 48 divisors (see below), whose sum is σ = 185418422784. Its totient is φ = 25363234176.

The previous prime is 77776671029. The next prime is 77776671073. The reversal of 77776671036 is 63017667777.

It is a super-2 number, since 2×77776671036² (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 15 ways as a sum of consecutive naturals, for example, 1366891 + ... + 1422653.

It is an arithmetic number, because the mean of its divisors is an integer number (3862883808).

Almost surely, 2^77776671036 is an apocalyptic number.

It is an amenable number.

77776671036 is an abundant number, since it is smaller than the sum of its proper divisors (107641751748).

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

77776671036 is a wasteful number, since it uses less digits than its factorization.

77776671036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58290 (or 58288 counting only the distinct ones).

The product of its (nonzero) digits is 10890936, while the sum is 57.

The spelling of 77776671036 in words is "seventy-seven billion, seven hundred seventy-six million, six hundred seventy-one thousand, thirty-six".