18008669770457 has 2 divisors, whose sum is σ = 18008669770458. Its totient is φ = 18008669770456.

The previous prime is 18008669770451. The next prime is 18008669770493. The reversal of 18008669770457 is 75407796680081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9834897412096 + 8173772358361 = 3136064^2 + 2858981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18008669770457 is a prime.

It is not a weakly prime, because it can be changed into another prime (18008669770451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9004334885228 + 9004334885229.

It is an arithmetic number, because the mean of its divisors is an integer number (9004334885229).

Almost surely, 2^{18008669770457} is an apocalyptic number.

It is an amenable number.

18008669770457 is a deficient number, since it is larger than the sum of its proper divisors (1).

18008669770457 is an equidigital number, since it uses as much as digits as its factorization.

18008669770457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142248960, while the sum is 68.

The spelling of 18008669770457 in words is "eighteen trillion, eight billion, six hundred sixty-nine million, seven hundred seventy thousand, four hundred fifty-seven".