18336325608157 has 2 divisors, whose sum is σ = 18336325608158. Its totient is φ = 18336325608156.

The previous prime is 18336325608113. The next prime is 18336325608191. The reversal of 18336325608157 is 75180652363381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14105327558436 + 4230998049721 = 3755706^2 + 2056939^2 .

It is a cyclic number.

It is not a de Polignac number, because 18336325608157 - 2³⁹ = 17786569794269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18336325308157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9168162804078 + 9168162804079.

It is an arithmetic number, because the mean of its divisors is an integer number (9168162804079).

Almost surely, 2^{18336325608157} is an apocalyptic number.

It is an amenable number.

18336325608157 is a deficient number, since it is larger than the sum of its proper divisors (1).

18336325608157 is an equidigital number, since it uses as much as digits as its factorization.

18336325608157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 18336325608157 in words is "eighteen trillion, three hundred thirty-six billion, three hundred twenty-five million, six hundred eight thousand, one hundred fifty-seven".