20972752607 has 6 divisors (see below), whose sum is σ = 21885336168. Its totient is φ = 20060229464.

The previous prime is 20972752579. The next prime is 20972752657. The reversal of 20972752607 is 70625727902.

It is a happy number.

It is not a de Polignac number, because 20972752607 - 2¹⁸ = 20972490463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20972752657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 679433 + ... + 709629.

It is an arithmetic number, because the mean of its divisors is an integer number (3647556028).

Almost surely, 2^20972752607 is an apocalyptic number.

20972752607 is a deficient number, since it is larger than the sum of its proper divisors (912583561).

20972752607 is an frugal number, since it uses more digits than its factorization.

20972752607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60417 (or 30220 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 20972752607 in words is "twenty billion, nine hundred seventy-two million, seven hundred fifty-two thousand, six hundred seven".