12252168729 has 8 divisors (see below), whose sum is σ = 18151361120. Its totient is φ = 8168112468.

The previous prime is 12252168673. The next prime is 12252168739. The reversal of 12252168729 is 92786125221.

12252168729 is a `hidden beast` number, since 1 + 22 + 521 + 6 + 87 + 29 = 666.

It is not a de Polignac number, because 12252168729 - 2⁸ = 12252168473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12252168739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226891987 + ... + 226892040.

It is an arithmetic number, because the mean of its divisors is an integer number (2268920140).

Almost surely, 2^12252168729 is an apocalyptic number.

It is an amenable number.

12252168729 is a deficient number, since it is larger than the sum of its proper divisors (5899192391).

12252168729 is an equidigital number, since it uses as much as digits as its factorization.

12252168729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453784036 (or 453784030 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 12252168729 in words is "twelve billion, two hundred fifty-two million, one hundred sixty-eight thousand, seven hundred twenty-nine".