16564635316157 has 2 divisors, whose sum is σ = 16564635316158. Its totient is φ = 16564635316156.

The previous prime is 16564635316039. The next prime is 16564635316219. The reversal of 16564635316157 is 75161353646561.

16564635316157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11690832902596 + 4873802413561 = 3419186^2 + 2207669^2 .

It is a cyclic number.

It is not a de Polignac number, because 16564635316157 - 2²⁶ = 16564568207293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16564635316096 and 16564635316105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16564635319157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8282317658078 + 8282317658079.

It is an arithmetic number, because the mean of its divisors is an integer number (8282317658079).

Almost surely, 2^{16564635316157} is an apocalyptic number.

It is an amenable number.

16564635316157 is a deficient number, since it is larger than the sum of its proper divisors (1).

16564635316157 is an equidigital number, since it uses as much as digits as its factorization.

16564635316157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824000, while the sum is 59.

The spelling of 16564635316157 in words is "sixteen trillion, five hundred sixty-four billion, six hundred thirty-five million, three hundred sixteen thousand, one hundred fifty-seven".