12456450057 has 32 divisors (see below), whose sum is σ = 17116876800. Its totient is φ = 8055096192.

The previous prime is 12456450031. The next prime is 12456450077. The reversal of 12456450057 is 75005465421.

It is a de Polignac number, because none of the positive numbers 2^k-12456450057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12456449997 and 12456450024.

It is not an unprimeable number, because it can be changed into a prime (12456450077) 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, 3436348 + ... + 3439970.

It is an arithmetic number, because the mean of its divisors is an integer number (534902400).

Almost surely, 2^12456450057 is an apocalyptic number.

It is an amenable number.

12456450057 is a deficient number, since it is larger than the sum of its proper divisors (4660426743).

12456450057 is a wasteful number, since it uses less digits than its factorization.

12456450057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957.

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 12456450057 in words is "twelve billion, four hundred fifty-six million, four hundred fifty thousand, fifty-seven".