32320884978 has 16 divisors (see below), whose sum is σ = 71824188960. Its totient is φ = 10773628308.

The previous prime is 32320884943. The next prime is 32320884989. The reversal of 32320884978 is 87948802323.

32320884978 is a `hidden beast` number, since 323 + 208 + 8 + 49 + 78 = 666.

It is a super-2 number, since 2×32320884978² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 598534907 = 32320884978 / (3 + 2 + 3 + 2 + 0 + 8 + 8 + 4 + 9 + 7 + 8).

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, 299267400 + ... + 299267507.

It is an arithmetic number, because the mean of its divisors is an integer number (4489011810).

Almost surely, 2^32320884978 is an apocalyptic number.

32320884978 is an abundant number, since it is smaller than the sum of its proper divisors (39503303982).

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

32320884978 is a wasteful number, since it uses less digits than its factorization.

32320884978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598534918 (or 598534912 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 32320884978 in words is "thirty-two billion, three hundred twenty million, eight hundred eighty-four thousand, nine hundred seventy-eight".