18265543153 has 48 divisors (see below), whose sum is σ = 21977568000. Its totient is φ = 15045488640.

The previous prime is 18265543147. The next prime is 18265543157. The reversal of 18265543153 is 35134556281.

It is a de Polignac number, because none of the positive numbers 2^k-18265543153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18265543157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40680273 + ... + 40680721.

It is an arithmetic number, because the mean of its divisors is an integer number (457866000).

Almost surely, 2^18265543153 is an apocalyptic number.

18265543153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18265543153 is a deficient number, since it is larger than the sum of its proper divisors (3712024847).

18265543153 is a wasteful number, since it uses less digits than its factorization.

18265543153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 829 counting only the distinct ones).

The product of its digits is 432000, while the sum is 43.

The spelling of 18265543153 in words is "eighteen billion, two hundred sixty-five million, five hundred forty-three thousand, one hundred fifty-three".