18869759999957 has 2 divisors, whose sum is σ = 18869759999958. Its totient is φ = 18869759999956.

The previous prime is 18869759999917. The next prime is 18869760000011. The reversal of 18869759999957 is 75999995796881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12479587761316 + 6390172238641 = 3532646^2 + 2527879^2 .

It is a cyclic number.

It is not a de Polignac number, because 18869759999957 - 2²⁴ = 18869743222741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18869759999917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9434879999978 + 9434879999979.

It is an arithmetic number, because the mean of its divisors is an integer number (9434879999979).

Almost surely, 2^{18869759999957} is an apocalyptic number.

It is an amenable number.

18869759999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

18869759999957 is an equidigital number, since it uses as much as digits as its factorization.

18869759999957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 249989846400, while the sum is 101.

The spelling of 18869759999957 in words is "eighteen trillion, eight hundred sixty-nine billion, seven hundred fifty-nine million, nine hundred ninety-nine thousand, nine hundred fifty-seven".