18412738522155 has 24 divisors (see below), whose sum is σ = 31958368292448. Its totient is φ = 9806910333696.

The previous prime is 18412738522133. The next prime is 18412738522163. The reversal of 18412738522155 is 55122583721481.

18412738522155 is a `hidden beast` number, since 1 + 8 + 41 + 2 + 7 + 385 + 2 + 215 + 5 = 666.

It is not a de Polignac number, because 18412738522155 - 2⁷ = 18412738522027 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275317822 + ... + 275384691.

It is an arithmetic number, because the mean of its divisors is an integer number (1331598678852).

Almost surely, 2^{18412738522155} is an apocalyptic number.

18412738522155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18412738522155 is a deficient number, since it is larger than the sum of its proper divisors (13545629770293).

18412738522155 is a wasteful number, since it uses less digits than its factorization.

18412738522155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550703267 (or 550703264 counting only the distinct ones).

The product of its digits is 5376000, while the sum is 54.

The spelling of 18412738522155 in words is "eighteen trillion, four hundred twelve billion, seven hundred thirty-eight million, five hundred twenty-two thousand, one hundred fifty-five".