977091212128 has 24 divisors (see below), whose sum is σ = 1924569302040. Its totient is φ = 488311706880.

The previous prime is 977091212113. The next prime is 977091212147. The reversal of 977091212128 is 821212190779.

It is a congruent number.

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, 7241458 + ... + 7375153.

It is an arithmetic number, because the mean of its divisors is an integer number (80190387585).

Almost surely, 2^977091212128 is an apocalyptic number.

It is an amenable number.

977091212128 is a deficient number, since it is larger than the sum of its proper divisors (947478089912).

977091212128 is a wasteful number, since it uses less digits than its factorization.

977091212128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14618710 (or 14618702 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 49.

The spelling of 977091212128 in words is "nine hundred seventy-seven billion, ninety-one million, two hundred twelve thousand, one hundred twenty-eight".