18157108355 has 8 divisors (see below), whose sum is σ = 21800733552. Its totient is φ = 14517551008.

The previous prime is 18157108337. The next prime is 18157108379. The reversal of 18157108355 is 55380175181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18157108355 - 2¹⁴ = 18157091971 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007132 + ... + 1025001.

It is an arithmetic number, because the mean of its divisors is an integer number (2725091694).

Almost surely, 2^18157108355 is an apocalyptic number.

18157108355 is a deficient number, since it is larger than the sum of its proper divisors (3643625197).

18157108355 is a wasteful number, since it uses less digits than its factorization.

18157108355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033925.

The product of its (nonzero) digits is 168000, while the sum is 44.

The spelling of 18157108355 in words is "eighteen billion, one hundred fifty-seven million, one hundred eight thousand, three hundred fifty-five".