12390294057 has 4 divisors (see below), whose sum is σ = 16520392080. Its totient is φ = 8260196036.

The previous prime is 12390294029. The next prime is 12390294067. The reversal of 12390294057 is 75049209321.

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 12390294057 - 2⁸ = 12390293801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12390294067) 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, 2065049007 + ... + 2065049012.

It is an arithmetic number, because the mean of its divisors is an integer number (4130098020).

Almost surely, 2^12390294057 is an apocalyptic number.

It is an amenable number.

12390294057 is a deficient number, since it is larger than the sum of its proper divisors (4130098023).

12390294057 is an equidigital number, since it uses as much as digits as its factorization.

12390294057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130098022.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 12390294057 in words is "twelve billion, three hundred ninety million, two hundred ninety-four thousand, fifty-seven".