12536343465 has 32 divisors (see below), whose sum is σ = 20160852096. Its totient is φ = 6651901440.

The previous prime is 12536343461. The next prime is 12536343527. The reversal of 12536343465 is 56434363521.

It is not a de Polignac number, because 12536343465 - 2² = 12536343461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12536343461) 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, 2820645 + ... + 2825085.

It is an arithmetic number, because the mean of its divisors is an integer number (630026628).

Almost surely, 2^12536343465 is an apocalyptic number.

12536343465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12536343465 is a deficient number, since it is larger than the sum of its proper divisors (7624508631).

12536343465 is a wasteful number, since it uses less digits than its factorization.

12536343465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369.

The product of its digits is 777600, while the sum is 42.

The spelling of 12536343465 in words is "twelve billion, five hundred thirty-six million, three hundred forty-three thousand, four hundred sixty-five".