89729764456 has 32 divisors (see below), whose sum is σ = 170034629760. Its totient is φ = 44388612352.

The previous prime is 89729764451. The next prime is 89729764469. The reversal of 89729764456 is 65446792798.

It is a junction number, because it is equal to n+sod(n) for n = 89729764391 and 89729764400.

It is not an unprimeable number, because it can be changed into a prime (89729764451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420801 + ... + 597103.

It is an arithmetic number, because the mean of its divisors is an integer number (5313582180).

Almost surely, 2^89729764456 is an apocalyptic number.

It is an amenable number.

89729764456 is a deficient number, since it is larger than the sum of its proper divisors (80304865304).

89729764456 is a wasteful number, since it uses less digits than its factorization.

89729764456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176985 (or 176981 counting only the distinct ones).

The product of its digits is 182891520, while the sum is 67.

The spelling of 89729764456 in words is "eighty-nine billion, seven hundred twenty-nine million, seven hundred sixty-four thousand, four hundred fifty-six".