12457159729 has 4 divisors (see below), whose sum is σ = 14236753984. Its totient is φ = 10677565476.

The previous prime is 12457159711. The next prime is 12457159733. The reversal of 12457159729 is 92795175421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12457159729 - 2⁹ = 12457159217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12457159739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889797117 + ... + 889797130.

It is an arithmetic number, because the mean of its divisors is an integer number (3559188496).

Almost surely, 2^12457159729 is an apocalyptic number.

It is an amenable number.

12457159729 is a deficient number, since it is larger than the sum of its proper divisors (1779594255).

12457159729 is an equidigital number, since it uses as much as digits as its factorization.

12457159729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779594254.

The product of its digits is 1587600, while the sum is 52.

The spelling of 12457159729 in words is "twelve billion, four hundred fifty-seven million, one hundred fifty-nine thousand, seven hundred twenty-nine".