89777877798 has 16 divisors (see below), whose sum is σ = 205206577920. Its totient is φ = 25650822216.

The previous prime is 89777877767. The next prime is 89777877821.

89777877798 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 89777877798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068784218 + ... + 1068784301.

It is an arithmetic number, because the mean of its divisors is an integer number (12825411120).

Almost surely, 2^89777877798 is an apocalyptic number.

89777877798 is an abundant number, since it is smaller than the sum of its proper divisors (115428700122).

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

89777877798 is a wasteful number, since it uses less digits than its factorization.

89777877798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137568531.

The product of its digits is 4879139328, while the sum is 84.

The spelling of 89777877798 in words is "eighty-nine billion, seven hundred seventy-seven million, eight hundred seventy-seven thousand, seven hundred ninety-eight".