20379938956 has 24 divisors (see below), whose sum is σ = 38414060384. Its totient is φ = 9404726400.

The previous prime is 20379938951. The next prime is 20379938977. The reversal of 20379938956 is 65983997302.

It is a junction number, because it is equal to n+sod(n) for n = 20379938894 and 20379938903.

It is not an unprimeable number, because it can be changed into a prime (20379938951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377881 + ... + 428431.

Almost surely, 2^20379938956 is an apocalyptic number.

20379938956 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20379938956 is a deficient number, since it is larger than the sum of its proper divisors (18034121428).

20379938956 is a wasteful number, since it uses less digits than its factorization.

20379938956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58321 (or 58319 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 61.

The spelling of 20379938956 in words is "twenty billion, three hundred seventy-nine million, nine hundred thirty-eight thousand, nine hundred fifty-six".