20993174192 has 40 divisors (see below), whose sum is σ = 42658314336. Its totient is φ = 9989213696.

The previous prime is 20993174173. The next prime is 20993174203. The reversal of 20993174192 is 29147139902.

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, 72293 + ... + 217284.

Almost surely, 2^20993174192 is an apocalyptic number.

It is an amenable number.

20993174192 is an abundant number, since it is smaller than the sum of its proper divisors (21665140144).

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

20993174192 is a wasteful number, since it uses less digits than its factorization.

20993174192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289805 (or 289799 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 20993174192 in words is "twenty billion, nine hundred ninety-three million, one hundred seventy-four thousand, one hundred ninety-two".