22720516647137 has 2 divisors, whose sum is σ = 22720516647138. Its totient is φ = 22720516647136.

The previous prime is 22720516647043. The next prime is 22720516647193. The reversal of 22720516647137 is 73174661502722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21726794762401 + 993721884736 = 4661201^2 + 996856^2 .

It is a cyclic number.

It is not a de Polignac number, because 22720516647137 - 2¹⁶ = 22720516581601 is a prime.

It is not a weakly prime, because it can be changed into another prime (22720516047137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11360258323568 + 11360258323569.

It is an arithmetic number, because the mean of its divisors is an integer number (11360258323569).

Almost surely, 2^{22720516647137} is an apocalyptic number.

It is an amenable number.

22720516647137 is a deficient number, since it is larger than the sum of its proper divisors (1).

22720516647137 is an equidigital number, since it uses as much as digits as its factorization.

22720516647137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5927040, while the sum is 53.

The spelling of 22720516647137 in words is "twenty-two trillion, seven hundred twenty billion, five hundred sixteen million, six hundred forty-seven thousand, one hundred thirty-seven".