12455691136 has 32 divisors (see below), whose sum is σ = 28358941680. Its totient is φ = 5338152960.

The previous prime is 12455691133. The next prime is 12455691163. The reversal of 12455691136 is 63119655421.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 12455691092 and 12455691101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12455691133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6949825 + ... + 6951616.

Almost surely, 2^12455691136 is an apocalyptic number.

12455691136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12455691136 is an abundant number, since it is smaller than the sum of its proper divisors (15903250544).

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

12455691136 is an equidigital number, since it uses as much as digits as its factorization.

12455691136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13901462 (or 13901450 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The spelling of 12455691136 in words is "twelve billion, four hundred fifty-five million, six hundred ninety-one thousand, one hundred thirty-six".