20972657630223 has 12 divisors (see below), whose sum is σ = 32624134091640. Its totient is φ = 12906250849296.

The previous prime is 20972657630189. The next prime is 20972657630227. The reversal of 20972657630223 is 32203675627902.

It is a happy number.

20972657630223 is a `hidden beast` number, since 2 + 0 + 9 + 7 + 265 + 76 + 302 + 2 + 3 = 666.

It is not a de Polignac number, because 20972657630223 - 2¹² = 20972657626127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20972657630223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20972657630227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89626741893 + ... + 89626742126.

It is an arithmetic number, because the mean of its divisors is an integer number (2718677840970).

Almost surely, 2^{20972657630223} is an apocalyptic number.

20972657630223 is a deficient number, since it is larger than the sum of its proper divisors (11651476461417).

20972657630223 is a wasteful number, since it uses less digits than its factorization.

20972657630223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179253484038 (or 179253484035 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 54.

The spelling of 20972657630223 in words is "twenty trillion, nine hundred seventy-two billion, six hundred fifty-seven million, six hundred thirty thousand, two hundred twenty-three".