32197399920 has 120 divisors (see below), whose sum is σ = 123576706656. Its totient is φ = 7359404544.

The previous prime is 32197399891. The next prime is 32197399933. The reversal of 32197399920 is 2999379123.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

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, 3189147 + ... + 3199226.

Almost surely, 2^32197399920 is an apocalyptic number.

32197399920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32197399920 is an abundant number, since it is smaller than the sum of its proper divisors (91379306736).

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

32197399920 is a wasteful number, since it uses less digits than its factorization.

32197399920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388399 (or 6388390 counting only the distinct ones).

The product of its (nonzero) digits is 1653372, while the sum is 54.

The spelling of 32197399920 in words is "thirty-two billion, one hundred ninety-seven million, three hundred ninety-nine thousand, nine hundred twenty".