12978032000 has 64 divisors (see below), whose sum is σ = 32266671840. Its totient is φ = 5191206400.

The previous prime is 12978031961. The next prime is 12978032017. The reversal of 12978032000 is 23087921.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 389564 + ... + 421563.

Almost surely, 2^12978032000 is an apocalyptic number.

12978032000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12978032000 is an abundant number, since it is smaller than the sum of its proper divisors (19288639840).

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

12978032000 is an frugal number, since it uses more digits than its factorization.

12978032000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811156 (or 811134 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 12978032000 in words is "twelve billion, nine hundred seventy-eight million, thirty-two thousand".