89960981520 has 40 divisors (see below), whose sum is σ = 278879043456. Its totient is φ = 23989595008.

The previous prime is 89960981401. The next prime is 89960981543. The reversal of 89960981520 is 2518906998.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

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, 187418472 + ... + 187418951.

Almost surely, 2^89960981520 is an apocalyptic number.

89960981520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89960981520 is an abundant number, since it is smaller than the sum of its proper divisors (188918061936).

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

89960981520 is a wasteful number, since it uses less digits than its factorization.

89960981520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374837439 (or 374837433 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 57.

The spelling of 89960981520 in words is "eighty-nine billion, nine hundred sixty million, nine hundred eighty-one thousand, five hundred twenty".