18155445795 has 48 divisors (see below), whose sum is σ = 32579820000. Its totient is φ = 9341767680.

The previous prime is 18155445779. The next prime is 18155445811. The reversal of 18155445795 is 59754455181.

18155445795 is a `hidden beast` number, since 1 + 8 + 1 + 5 + 544 + 5 + 7 + 95 = 666.

It is an interprime number because it is at equal distance from previous prime (18155445779) and next prime (18155445811).

It is not a de Polignac number, because 18155445795 - 2⁴ = 18155445779 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1951555 + ... + 1960835.

It is an arithmetic number, because the mean of its divisors is an integer number (678746250).

Almost surely, 2^18155445795 is an apocalyptic number.

18155445795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18155445795 is a deficient number, since it is larger than the sum of its proper divisors (14424374205).

18155445795 is a wasteful number, since it uses less digits than its factorization.

18155445795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10820 (or 10817 counting only the distinct ones).

The product of its digits is 5040000, while the sum is 54.

The spelling of 18155445795 in words is "eighteen billion, one hundred fifty-five million, four hundred forty-five thousand, seven hundred ninety-five".