18653893538112 has 224 divisors, whose sum is σ = 63446880106240. Its totient is φ = 5329683588096.

The previous prime is 18653893538107. The next prime is 18653893538141. The reversal of 18653893538112 is 21183539835681.

18653893538112 is a `hidden beast` number, since 1 + 8 + 6 + 5 + 3 + 8 + 93 + 538 + 1 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 18653893538112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8539693 + ... + 10499244.

Almost surely, 2^{18653893538112} is an apocalyptic number.

18653893538112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18653893538112 is an abundant number, since it is smaller than the sum of its proper divisors (44792986568128).

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

18653893538112 is an frugal number, since it uses more digits than its factorization.

18653893538112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19038977 (or 19038949 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 63.

The spelling of 18653893538112 in words is "eighteen trillion, six hundred fifty-three billion, eight hundred ninety-three million, five hundred thirty-eight thousand, one hundred twelve".