32397567978 has 32 divisors (see below), whose sum is σ = 66898368000. Its totient is φ = 10448786880.

The previous prime is 32397567911. The next prime is 32397568003. The reversal of 32397567978 is 87976579323.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1153648 + ... + 1181396.

It is an arithmetic number, because the mean of its divisors is an integer number (2090574000).

Almost surely, 2^32397567978 is an apocalyptic number.

32397567978 is an abundant number, since it is smaller than the sum of its proper divisors (34500800022).

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

32397567978 is a wasteful number, since it uses less digits than its factorization.

32397567978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34062.

The product of its digits is 120022560, while the sum is 66.

The spelling of 32397567978 in words is "thirty-two billion, three hundred ninety-seven million, five hundred sixty-seven thousand, nine hundred seventy-eight".