12480390457 has 4 divisors (see below), whose sum is σ = 12578661376. Its totient is φ = 12382119540.

The previous prime is 12480390427. The next prime is 12480390467. The reversal of 12480390457 is 75409308421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75409308421 = 43 ⋅1753704847.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12480390457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12480390427) 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, 49135269 + ... + 49135522.

It is an arithmetic number, because the mean of its divisors is an integer number (3144665344).

Almost surely, 2^12480390457 is an apocalyptic number.

It is an amenable number.

12480390457 is a deficient number, since it is larger than the sum of its proper divisors (98270919).

12480390457 is an equidigital number, since it uses as much as digits as its factorization.

12480390457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98270918.

The product of its (nonzero) digits is 241920, while the sum is 43.

Adding to 12480390457 its reverse (75409308421), we get a palindrome (87889698878).

The spelling of 12480390457 in words is "twelve billion, four hundred eighty million, three hundred ninety thousand, four hundred fifty-seven".