12136445212431 has 32 divisors (see below), whose sum is σ = 16741059427840. Its totient is φ = 7815820118400.

The previous prime is 12136445212427. The next prime is 12136445212433. The reversal of 12136445212431 is 13421254463121.

12136445212431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12136445212431 - 2² = 12136445212427 is a prime.

It is a super-2 number, since 2×12136445212431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12136445212431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12136445212433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6809286 + ... + 8404716.

It is an arithmetic number, because the mean of its divisors is an integer number (523158107120).

Almost surely, 2^{12136445212431} is an apocalyptic number.

12136445212431 is a deficient number, since it is larger than the sum of its proper divisors (4604614215409).

12136445212431 is a wasteful number, since it uses less digits than its factorization.

12136445212431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596127.

The product of its digits is 138240, while the sum is 39.

Adding to 12136445212431 its reverse (13421254463121), we get a palindrome (25557699675552).

The spelling of 12136445212431 in words is "twelve trillion, one hundred thirty-six billion, four hundred forty-five million, two hundred twelve thousand, four hundred thirty-one".