8797557978 has 48 divisors (see below), whose sum is σ = 21008647296. Its totient is φ = 2638437120.

The previous prime is 8797557941. The next prime is 8797558009.

It is a happy number.

8797557978 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209826 + ... + 248237.

It is an arithmetic number, because the mean of its divisors is an integer number (437680152).

Almost surely, 2^8797557978 is an apocalyptic number.

8797557978 is an abundant number, since it is smaller than the sum of its proper divisors (12211089318).

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

8797557978 is a wasteful number, since it uses less digits than its factorization.

8797557978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458179 (or 458176 counting only the distinct ones).

The product of its digits is 311169600, while the sum is 72.

The square root of 8797557978 is about 93795.2982723548. The cubic root of 8797557978 is about 2064.3692397030.

The spelling of 8797557978 in words is "eight billion, seven hundred ninety-seven million, five hundred fifty-seven thousand, nine hundred seventy-eight".