18015052905 has 12 divisors (see below), whose sum is σ = 31226091780. Its totient is φ = 9608028192.

The previous prime is 18015052903. The next prime is 18015052943. The reversal of 18015052905 is 50925051081.

It is a happy number.

18015052905 is a `hidden beast` number, since 1 + 80 + 1 + 50 + 529 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7791416361 + 10223636544 = 88269^2 + 101112^2 .

It is not a de Polignac number, because 18015052905 - 2¹ = 18015052903 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18015052905.

It is not an unprimeable number, because it can be changed into a prime (18015052903) 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 11 ways as a sum of consecutive naturals, for example, 200167210 + ... + 200167299.

It is an arithmetic number, because the mean of its divisors is an integer number (2602174315).

Almost surely, 2^18015052905 is an apocalyptic number.

18015052905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18015052905 is a deficient number, since it is larger than the sum of its proper divisors (13211038875).

18015052905 is a wasteful number, since it uses less digits than its factorization.

18015052905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400334520 (or 400334517 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 36.

The spelling of 18015052905 in words is "eighteen billion, fifteen million, fifty-two thousand, nine hundred five".