18112265504 has 12 divisors (see below), whose sum is σ = 35658522774. Its totient is φ = 9056132736.

The previous prime is 18112265503. The next prime is 18112265513. The reversal of 18112265504 is 40556221181.

It can be written as a sum of positive squares in only one way, i.e., 12746410000 + 5365855504 = 112900^2 + 73252^2 .

It is not an unprimeable number, because it can be changed into a prime (18112265503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283004117 + ... + 283004180.

Almost surely, 2^18112265504 is an apocalyptic number.

It is an amenable number.

18112265504 is a deficient number, since it is larger than the sum of its proper divisors (17546257270).

18112265504 is an equidigital number, since it uses as much as digits as its factorization.

18112265504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566008307 (or 566008299 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

Adding to 18112265504 its reverse (40556221181), we get a palindrome (58668486685).

The spelling of 18112265504 in words is "eighteen billion, one hundred twelve million, two hundred sixty-five thousand, five hundred four".