18137770699 has 2 divisors, whose sum is σ = 18137770700. Its totient is φ = 18137770698.

The previous prime is 18137770661. The next prime is 18137770723. The reversal of 18137770699 is 99607773181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18137770699 - 2¹⁷ = 18137639627 is a prime.

It is not a weakly prime, because it can be changed into another prime (18137770639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9068885349 + 9068885350.

It is an arithmetic number, because the mean of its divisors is an integer number (9068885350).

Almost surely, 2^18137770699 is an apocalyptic number.

18137770699 is a deficient number, since it is larger than the sum of its proper divisors (1).

18137770699 is an equidigital number, since it uses as much as digits as its factorization.

18137770699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000752, while the sum is 58.

The spelling of 18137770699 in words is "eighteen billion, one hundred thirty-seven million, seven hundred seventy thousand, six hundred ninety-nine".