12506442601 has 4 divisors (see below), whose sum is σ = 12509095312. Its totient is φ = 12503789892.

The previous prime is 12506442593. The next prime is 12506442617. The reversal of 12506442601 is 10624460521.

It is a happy number.

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 12506442601 - 2³ = 12506442593 is a prime.

It is a super-2 number, since 2×12506442601² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12506442661) 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, 1319271 + ... + 1328716.

It is an arithmetic number, because the mean of its divisors is an integer number (3127273828).

Almost surely, 2^12506442601 is an apocalyptic number.

It is an amenable number.

12506442601 is a deficient number, since it is larger than the sum of its proper divisors (2652711).

12506442601 is an equidigital number, since it uses as much as digits as its factorization.

12506442601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652710.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 12506442601 in words is "twelve billion, five hundred six million, four hundred forty-two thousand, six hundred one".