20972016312 has 64 divisors (see below), whose sum is σ = 56801364480. Its totient is φ = 6414271872.

The previous prime is 20972016293. The next prime is 20972016343. The reversal of 20972016312 is 21361027902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149148 + ... + 253355.

It is an arithmetic number, because the mean of its divisors is an integer number (887521320).

Almost surely, 2^20972016312 is an apocalyptic number.

It is an amenable number.

20972016312 is an abundant number, since it is smaller than the sum of its proper divisors (35829348168).

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

20972016312 is a wasteful number, since it uses less digits than its factorization.

20972016312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402692 (or 402688 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 20972016312 in words is "twenty billion, nine hundred seventy-two million, sixteen thousand, three hundred twelve".