18157300553 has 12 divisors (see below), whose sum is σ = 20958774720. Its totient is φ = 15409246800.

The previous prime is 18157300547. The next prime is 18157300559. The reversal of 18157300553 is 35500375181.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18157300547) and next prime (18157300559).

It is not a de Polignac number, because 18157300553 - 2⁶ = 18157300489 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18157300559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55733 + ... + 198546.

It is an arithmetic number, because the mean of its divisors is an integer number (1746564560).

Almost surely, 2^18157300553 is an apocalyptic number.

It is an amenable number.

18157300553 is a deficient number, since it is larger than the sum of its proper divisors (2801474167).

18157300553 is an equidigital number, since it uses as much as digits as its factorization.

18157300553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254488 (or 254387 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 18157300553 in words is "eighteen billion, one hundred fifty-seven million, three hundred thousand, five hundred fifty-three".