977863197807 has 48 divisors (see below), whose sum is σ = 1476551172096. Its totient is φ = 622436496000.

The previous prime is 977863197799. The next prime is 977863197821. The reversal of 977863197807 is 708791368779.

977863197807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 977863197807 - 2³ = 977863197799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977863197827) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 463221682 + ... + 463223792.

It is an arithmetic number, because the mean of its divisors is an integer number (30761482752).

Almost surely, 2^977863197807 is an apocalyptic number.

977863197807 is a deficient number, since it is larger than the sum of its proper divisors (498687974289).

977863197807 is a wasteful number, since it uses less digits than its factorization.

977863197807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5132 (or 5129 counting only the distinct ones).

The product of its (nonzero) digits is 224042112, while the sum is 72.

The spelling of 977863197807 in words is "nine hundred seventy-seven billion, eight hundred sixty-three million, one hundred ninety-seven thousand, eight hundred seven".