20513042992 has 20 divisors (see below), whose sum is σ = 42801253600. Its totient is φ = 9467558208.

The previous prime is 20513042987. The next prime is 20513042999. The reversal of 20513042992 is 29924031502.

It is not an unprimeable number, because it can be changed into a prime (20513042999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49309992 + ... + 49310407.

It is an arithmetic number, because the mean of its divisors is an integer number (2140062680).

Almost surely, 2^20513042992 is an apocalyptic number.

It is an amenable number.

20513042992 is an abundant number, since it is smaller than the sum of its proper divisors (22288210608).

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

20513042992 is a wasteful number, since it uses less digits than its factorization.

20513042992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98620420 (or 98620414 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 20513042992 in words is "twenty billion, five hundred thirteen million, forty-two thousand, nine hundred ninety-two".