12693537186 has 144 divisors (see below), whose sum is σ = 29986286400. Its totient is φ = 3578432000.

The previous prime is 12693537179. The next prime is 12693537209. The reversal of 12693537186 is 68173539621.

It is a super-2 number, since 2×12693537186² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21190915 + ... + 21191513.

It is an arithmetic number, because the mean of its divisors is an integer number (208238100).

Almost surely, 2^12693537186 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12693537186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14993143200).

12693537186 is an abundant number, since it is smaller than the sum of its proper divisors (17292749214).

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

12693537186 is a wasteful number, since it uses less digits than its factorization.

12693537186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 733 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The spelling of 12693537186 in words is "twelve billion, six hundred ninety-three million, five hundred thirty-seven thousand, one hundred eighty-six".