18965138896116 has 120 divisors (see below), whose sum is σ = 56744978416896. Its totient is φ = 5410606818240.

The previous prime is 18965138896063. The next prime is 18965138896213. The reversal of 18965138896116 is 61169883156981.

18965138896116 is a `hidden beast` number, since 1 + 8 + 9 + 6 + 513 + 8 + 8 + 96 + 1 + 16 = 666.

It is a super-2 number, since 2×18965138896116² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4640380 + ... + 7711251.

Almost surely, 2^{18965138896116} is an apocalyptic number.

It is an amenable number.

18965138896116 is an abundant number, since it is smaller than the sum of its proper divisors (37779839520780).

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

18965138896116 is a wasteful number, since it uses less digits than its factorization.

18965138896116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12352331 (or 12352320 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 72.

The spelling of 18965138896116 in words is "eighteen trillion, nine hundred sixty-five billion, one hundred thirty-eight million, eight hundred ninety-six thousand, one hundred sixteen".