20972832337 has 2 divisors, whose sum is σ = 20972832338. Its totient is φ = 20972832336.

The previous prime is 20972832313. The next prime is 20972832403. The reversal of 20972832337 is 73323827902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13689234001 + 7283598336 = 117001^2 + 85344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20972832337 is a prime.

It is not a weakly prime, because it can be changed into another prime (20972812337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10486416168 + 10486416169.

It is an arithmetic number, because the mean of its divisors is an integer number (10486416169).

Almost surely, 2^20972832337 is an apocalyptic number.

It is an amenable number.

20972832337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20972832337 is an equidigital number, since it uses as much as digits as its factorization.

20972832337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 20972832337 in words is "twenty billion, nine hundred seventy-two million, eight hundred thirty-two thousand, three hundred thirty-seven".