32109533986920 has 128 divisors (see below), whose sum is σ = 104132938694400. Its totient is φ = 7873832392704.

The previous prime is 32109533986913. The next prime is 32109533986997. The reversal of 32109533986920 is 2968933590123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38720965 + ... + 39541524.

It is an arithmetic number, because the mean of its divisors is an integer number (813538583550).

Almost surely, 2^{32109533986920} is an apocalyptic number.

32109533986920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32109533986920 is an abundant number, since it is smaller than the sum of its proper divisors (72023404707480).

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

32109533986920 is a wasteful number, since it uses less digits than its factorization.

32109533986920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78262779 (or 78262775 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 60.

The spelling of 32109533986920 in words is "thirty-two trillion, one hundred nine billion, five hundred thirty-three million, nine hundred eighty-six thousand, nine hundred twenty".