20969704972 has 12 divisors (see below), whose sum is σ = 36731319520. Its totient is φ = 10475042256.

The previous prime is 20969704967. The next prime is 20969705021. The reversal of 20969704972 is 27940796902.

It is a super-2 number, since 2×20969704972² (a number of 21 digits) contains 22 as substring.

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, 2447748 + ... + 2456299.

Almost surely, 2^20969704972 is an apocalyptic number.

It is an amenable number.

20969704972 is a deficient number, since it is larger than the sum of its proper divisors (15761614548).

20969704972 is a wasteful number, since it uses less digits than its factorization.

20969704972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905120 (or 4905118 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 55.

The spelling of 20969704972 in words is "twenty billion, nine hundred sixty-nine million, seven hundred four thousand, nine hundred seventy-two".