18121614085175 has 12 divisors (see below), whose sum is σ = 22470938557320. Its totient is φ = 14497202821920.

The previous prime is 18121614085153. The next prime is 18121614085241. The reversal of 18121614085175 is 57158041612181.

It is not a de Polignac number, because 18121614085175 - 2⁶ = 18121614085111 is a prime.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2136161 + ... + 6387989.

It is an arithmetic number, because the mean of its divisors is an integer number (1872578213110).

Almost surely, 2^{18121614085175} is an apocalyptic number.

18121614085175 is a deficient number, since it is larger than the sum of its proper divisors (4349324472145).

18121614085175 is a wasteful number, since it uses less digits than its factorization.

18121614085175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422322 (or 4422317 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 50.

The spelling of 18121614085175 in words is "eighteen trillion, one hundred twenty-one billion, six hundred fourteen million, eighty-five thousand, one hundred seventy-five".