89778768972 has 24 divisors (see below), whose sum is σ = 209642410992. Its totient is φ = 29903596800.

The previous prime is 89778768941. The next prime is 89778768977. The reversal of 89778768972 is 27986787798.

It is not an unprimeable number, because it can be changed into a prime (89778768977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2815929 + ... + 2847632.

It is an arithmetic number, because the mean of its divisors is an integer number (8735100458).

Almost surely, 2^89778768972 is an apocalyptic number.

It is an amenable number.

89778768972 is an abundant number, since it is smaller than the sum of its proper divisors (119863642020).

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

89778768972 is a wasteful number, since it uses less digits than its factorization.

89778768972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5664889 (or 5664887 counting only the distinct ones).

The product of its digits is 1194891264, while the sum is 78.

The spelling of 89778768972 in words is "eighty-nine billion, seven hundred seventy-eight million, seven hundred sixty-eight thousand, nine hundred seventy-two".