77050921136 has 40 divisors (see below), whose sum is σ = 175223918880. Its totient is φ = 32129339904.

The previous prime is 77050921097. The next prime is 77050921153. The reversal of 77050921136 is 63112905077.

It is a junction number, because it is equal to n+sod(n) for n = 77050921093 and 77050921102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9292541 + ... + 9300828.

It is an arithmetic number, because the mean of its divisors is an integer number (4380597972).

Almost surely, 2^77050921136 is an apocalyptic number.

It is an amenable number.

77050921136 is an abundant number, since it is smaller than the sum of its proper divisors (98172997744).

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

77050921136 is a wasteful number, since it uses less digits than its factorization.

77050921136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18593421 (or 18593415 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 41.

The spelling of 77050921136 in words is "seventy-seven billion, fifty million, nine hundred twenty-one thousand, one hundred thirty-six".