12534635251 has 16 divisors (see below), whose sum is σ = 13020134400. Its totient is φ = 12058113600.

The previous prime is 12534635231. The next prime is 12534635257. The reversal of 12534635251 is 15253643521.

It is a cyclic number.

It is not a de Polignac number, because 12534635251 - 2¹³ = 12534627059 is a prime.

It is a super-2 number, since 2×12534635251² (a number of 21 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 12534635251.

It is not an unprimeable number, because it can be changed into a prime (12534635257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2974536 + ... + 2978746.

It is an arithmetic number, because the mean of its divisors is an integer number (813758400).

Almost surely, 2^12534635251 is an apocalyptic number.

12534635251 is a deficient number, since it is larger than the sum of its proper divisors (485499149).

12534635251 is an equidigital number, since it uses as much as digits as its factorization.

12534635251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250.

The product of its digits is 108000, while the sum is 37.

The spelling of 12534635251 in words is "twelve billion, five hundred thirty-four million, six hundred thirty-five thousand, two hundred fifty-one".