18550177059 has 4 divisors (see below), whose sum is σ = 24733569416. Its totient is φ = 12366784704.

The previous prime is 18550177057. The next prime is 18550177103. The reversal of 18550177059 is 95077105581.

It is a happy number.

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

It is not a de Polignac number, because 18550177059 - 2¹ = 18550177057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18550176999 and 18550177017.

It is not an unprimeable number, because it can be changed into a prime (18550177057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3091696174 + ... + 3091696179.

It is an arithmetic number, because the mean of its divisors is an integer number (6183392354).

Almost surely, 2^18550177059 is an apocalyptic number.

18550177059 is a deficient number, since it is larger than the sum of its proper divisors (6183392357).

18550177059 is an equidigital number, since it uses as much as digits as its factorization.

18550177059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6183392356.

The product of its (nonzero) digits is 441000, while the sum is 48.

The spelling of 18550177059 in words is "eighteen billion, five hundred fifty million, one hundred seventy-seven thousand, fifty-nine".