20772793932 has 24 divisors (see below), whose sum is σ = 52876203072. Its totient is φ = 6294786000.

The previous prime is 20772793913. The next prime is 20772793957. The reversal of 20772793932 is 23939727702.

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, 78684694 + ... + 78684957.

It is an arithmetic number, because the mean of its divisors is an integer number (2203175128).

Almost surely, 2^20772793932 is an apocalyptic number.

20772793932 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20772793932 is an abundant number, since it is smaller than the sum of its proper divisors (32103409140).

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

20772793932 is a wasteful number, since it uses less digits than its factorization.

20772793932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157369669 (or 157369667 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 51.

The spelling of 20772793932 in words is "twenty billion, seven hundred seventy-two million, seven hundred ninety-three thousand, nine hundred thirty-two".