18475263312 has 40 divisors (see below), whose sum is σ = 52066652640. Its totient is φ = 5598564480.

The previous prime is 18475263307. The next prime is 18475263319. The reversal of 18475263312 is 21336257481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18475263319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17494987 + ... + 17496042.

It is an arithmetic number, because the mean of its divisors is an integer number (1301666316).

Almost surely, 2^18475263312 is an apocalyptic number.

18475263312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18475263312 is an abundant number, since it is smaller than the sum of its proper divisors (33591389328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18475263312 is a wasteful number, since it uses less digits than its factorization.

18475263312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34991051 (or 34991045 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The spelling of 18475263312 in words is "eighteen billion, four hundred seventy-five million, two hundred sixty-three thousand, three hundred twelve".