12691041039360 has 132 divisors (see below), whose sum is σ = 43974126865188. Its totient is φ = 3384277598208.

The previous prime is 12691041039349. The next prime is 12691041039361. The reversal of 12691041039360 is 6393014019621.

12691041039360 is a `hidden beast` number, since 1 + 2 + 6 + 91 + 0 + 410 + 3 + 93 + 60 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1570470137856 + 11120570901504 = 1253184^2 + 3334752^2 .

It is a super-2 number, since 2×12691041039360² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12691041039361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137660529 + ... + 137752688.

Almost surely, 2^{12691041039360} is an apocalyptic number.

12691041039360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12691041039360 is an abundant number, since it is smaller than the sum of its proper divisors (31283085825828).

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

12691041039360 is a wasteful number, since it uses less digits than its factorization.

12691041039360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275413248 (or 275413227 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 12691041039360 in words is "twelve trillion, six hundred ninety-one billion, forty-one million, thirty-nine thousand, three hundred sixty".