12536401431 has 8 divisors (see below), whose sum is σ = 16734574080. Its totient is φ = 8347914872.

The previous prime is 12536401421. The next prime is 12536401433. The reversal of 12536401431 is 13410463521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12536401431 - 2¹⁰ = 12536400407 is a prime.

It is a super-2 number, since 2×12536401431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12536401433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2418501 + ... + 2423678.

It is an arithmetic number, because the mean of its divisors is an integer number (2091821760).

Almost surely, 2^12536401431 is an apocalyptic number.

12536401431 is a deficient number, since it is larger than the sum of its proper divisors (4198172649).

12536401431 is an equidigital number, since it uses as much as digits as its factorization.

12536401431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843045.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 12536401431 its reverse (13410463521), we get a palindrome (25946864952).

The spelling of 12536401431 in words is "twelve billion, five hundred thirty-six million, four hundred one thousand, four hundred thirty-one".