20797920342 has 32 divisors (see below), whose sum is σ = 46527804000. Its totient is φ = 6886109664.

The previous prime is 20797920337. The next prime is 20797920359. The reversal of 20797920342 is 24302979702.

It is a congruent number.

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, 1284393 + ... + 1300484.

It is an arithmetic number, because the mean of its divisors is an integer number (1453993875).

Almost surely, 2^20797920342 is an apocalyptic number.

20797920342 is an abundant number, since it is smaller than the sum of its proper divisors (25729883658).

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

20797920342 is a wasteful number, since it uses less digits than its factorization.

20797920342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585037 (or 2585031 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 20797920342 in words is "twenty billion, seven hundred ninety-seven million, nine hundred twenty thousand, three hundred forty-two".