20396777932 has 12 divisors (see below), whose sum is σ = 37573012120. Its totient is φ = 9661631616.

The previous prime is 20396777909. The next prime is 20396777957. The reversal of 20396777932 is 23977769302.

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, 134189253 + ... + 134189404.

Almost surely, 2^20396777932 is an apocalyptic number.

It is an amenable number.

20396777932 is a deficient number, since it is larger than the sum of its proper divisors (17176234188).

20396777932 is a wasteful number, since it uses less digits than its factorization.

20396777932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268378680 (or 268378678 counting only the distinct ones).

The product of its (nonzero) digits is 6001128, while the sum is 55.

The spelling of 20396777932 in words is "twenty billion, three hundred ninety-six million, seven hundred seventy-seven thousand, nine hundred thirty-two".