15881136122236 has 24 divisors (see below), whose sum is σ = 34649751540096. Its totient is φ = 6187455631920.

The previous prime is 15881136122231. The next prime is 15881136122237. The reversal of 15881136122236 is 63222163118851.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 15881136122236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15881136122231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25781064826 + ... + 25781065441.

It is an arithmetic number, because the mean of its divisors is an integer number (1443739647504).

Almost surely, 2^{15881136122236} is an apocalyptic number.

It is an amenable number.

15881136122236 is an abundant number, since it is smaller than the sum of its proper divisors (18768615417860).

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

15881136122236 is a wasteful number, since it uses less digits than its factorization.

15881136122236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51562130289 (or 51562130287 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The spelling of 15881136122236 in words is "fifteen trillion, eight hundred eighty-one billion, one hundred thirty-six million, one hundred twenty-two thousand, two hundred thirty-six".