18033836656157 has 4 divisors (see below), whose sum is σ = 20610099035616. Its totient is φ = 15457574276700.

The previous prime is 18033836656141. The next prime is 18033836656189. The reversal of 18033836656157 is 75165663833081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18033836656157 - 2⁴ = 18033836656141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18033836656157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18033836656127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288131189719 + ... + 1288131189732.

It is an arithmetic number, because the mean of its divisors is an integer number (5152524758904).

Almost surely, 2^{18033836656157} is an apocalyptic number.

It is an amenable number.

18033836656157 is a deficient number, since it is larger than the sum of its proper divisors (2576262379459).

18033836656157 is an equidigital number, since it uses as much as digits as its factorization.

18033836656157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576262379458.

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 18033836656157 in words is "eighteen trillion, thirty-three billion, eight hundred thirty-six million, six hundred fifty-six thousand, one hundred fifty-seven".