3197000778928 has 20 divisors (see below), whose sum is σ = 6757297101288. Its totient is φ = 1453182172160.

The previous prime is 3197000778911. The next prime is 3197000778947. The reversal of 3197000778928 is 8298770007913.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9082388401 + ... + 9082388752.

Almost surely, 2^{3197000778928} is an apocalyptic number.

It is an amenable number.

3197000778928 is an abundant number, since it is smaller than the sum of its proper divisors (3560296322360).

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

3197000778928 is a wasteful number, since it uses less digits than its factorization.

3197000778928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18164777172 (or 18164777166 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 61.

The spelling of 3197000778928 in words is "three trillion, one hundred ninety-seven billion, seven hundred seventy-eight thousand, nine hundred twenty-eight".