977947321028 has 12 divisors (see below), whose sum is σ = 1716910732992. Its totient is φ = 487401397320.

The previous prime is 977947321007. The next prime is 977947321061. The reversal of 977947321028 is 820123749779.

977947321028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 393064400 + ... + 393066887.

It is an arithmetic number, because the mean of its divisors is an integer number (143075894416).

Almost surely, 2^977947321028 is an apocalyptic number.

It is an amenable number.

977947321028 is a deficient number, since it is larger than the sum of its proper divisors (738963411964).

977947321028 is a wasteful number, since it uses less digits than its factorization.

977947321028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786131602 (or 786131600 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 59.

The spelling of 977947321028 in words is "nine hundred seventy-seven billion, nine hundred forty-seven million, three hundred twenty-one thousand, twenty-eight".