18799570705 has 4 divisors (see below), whose sum is σ = 22559484852. Its totient is φ = 15039656560.

The previous prime is 18799570681. The next prime is 18799570753. The reversal of 18799570705 is 50707599781.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4834003729 + 13965566976 = 69527^2 + 118176^2 .

It is not a de Polignac number, because 18799570705 - 2⁹ = 18799570193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18799570705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1879957066 + ... + 1879957075.

It is an arithmetic number, because the mean of its divisors is an integer number (5639871213).

Almost surely, 2^18799570705 is an apocalyptic number.

It is an amenable number.

18799570705 is a deficient number, since it is larger than the sum of its proper divisors (3759914147).

18799570705 is an equidigital number, since it uses as much as digits as its factorization.

18799570705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759914146.

The product of its (nonzero) digits is 5556600, while the sum is 58.

The spelling of 18799570705 in words is "eighteen billion, seven hundred ninety-nine million, five hundred seventy thousand, seven hundred five".