20972496863 has 8 divisors (see below), whose sum is σ = 21700976880. Its totient is φ = 20244369600.

The previous prime is 20972496859. The next prime is 20972496877. The reversal of 20972496863 is 36869427902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20972496863 - 2² = 20972496859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20972496799 and 20972496808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20972496823) 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, 35756 + ... + 207902.

It is an arithmetic number, because the mean of its divisors is an integer number (2712622110).

Almost surely, 2^20972496863 is an apocalyptic number.

20972496863 is a deficient number, since it is larger than the sum of its proper divisors (728480017).

20972496863 is a wasteful number, since it uses less digits than its factorization.

20972496863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176377.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 20972496863 in words is "twenty billion, nine hundred seventy-two million, four hundred ninety-six thousand, eight hundred sixty-three".