18688598112 has 96 divisors (see below), whose sum is σ = 51644210688. Its totient is φ = 5905872896.

The previous prime is 18688598087. The next prime is 18688598119. The reversal of 18688598112 is 21189588681.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18688598119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212053 + ... + 286955.

It is an arithmetic number, because the mean of its divisors is an integer number (537960528).

Almost surely, 2^18688598112 is an apocalyptic number.

18688598112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18688598112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25822105344).

18688598112 is an abundant number, since it is smaller than the sum of its proper divisors (32955612576).

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

18688598112 is a wasteful number, since it uses less digits than its factorization.

18688598112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75052 (or 75044 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 57.

The spelling of 18688598112 in words is "eighteen billion, six hundred eighty-eight million, five hundred ninety-eight thousand, one hundred twelve".