977923175825 has 12 divisors (see below), whose sum is σ = 1225126027020. Its totient is φ = 774273192960.

The previous prime is 977923175819. The next prime is 977923175833. The reversal of 977923175825 is 528571329779.

977923175825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 199713424 + 977723462401 = 14132^2 + 988799^2 .

It is not a de Polignac number, because 977923175825 - 2²⁰ = 977922127249 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201631220 + ... + 201636069.

It is an arithmetic number, because the mean of its divisors is an integer number (102093835585).

Almost surely, 2^977923175825 is an apocalyptic number.

It is an amenable number.

977923175825 is a deficient number, since it is larger than the sum of its proper divisors (247202851195).

977923175825 is a wasteful number, since it uses less digits than its factorization.

977923175825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403267396 (or 403267391 counting only the distinct ones).

The product of its digits is 66679200, while the sum is 65.

The spelling of 977923175825 in words is "nine hundred seventy-seven billion, nine hundred twenty-three million, one hundred seventy-five thousand, eight hundred twenty-five".