18289289553045 has 24 divisors (see below), whose sum is σ = 34040473618464. Its totient is φ = 8360818081056.

The previous prime is 18289289553001. The next prime is 18289289553049. The reversal of 18289289553045 is 54035598298281.

It is not a de Polignac number, because 18289289553045 - 2⁹ = 18289289552533 is a prime.

It is a super-2 number, since 2×18289289553045² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18289289553049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12441692839 + ... + 12441694308.

It is an arithmetic number, because the mean of its divisors is an integer number (1418353067436).

Almost surely, 2^{18289289553045} is an apocalyptic number.

18289289553045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18289289553045 is a deficient number, since it is larger than the sum of its proper divisors (15751184065419).

18289289553045 is a wasteful number, since it uses less digits than its factorization.

18289289553045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24883387169 (or 24883387162 counting only the distinct ones).

The product of its (nonzero) digits is 248832000, while the sum is 69.

The spelling of 18289289553045 in words is "eighteen trillion, two hundred eighty-nine billion, two hundred eighty-nine million, five hundred fifty-three thousand, forty-five".