12601493669 has 4 divisors (see below), whose sum is σ = 12631426380. Its totient is φ = 12571560960.

The previous prime is 12601493599. The next prime is 12601493677. The reversal of 12601493669 is 96639410621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 991431169 + 11610062500 = 31487^2 + 107750^2 .

It is a cyclic number.

It is not a de Polignac number, because 12601493669 - 2⁸ = 12601493413 is a prime.

It is a super-2 number, since 2×12601493669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12601493969) 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, 14965724 + ... + 14966565.

It is an arithmetic number, because the mean of its divisors is an integer number (3157856595).

Almost surely, 2^12601493669 is an apocalyptic number.

It is an amenable number.

12601493669 is a deficient number, since it is larger than the sum of its proper divisors (29932711).

12601493669 is an equidigital number, since it uses as much as digits as its factorization.

12601493669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29932710.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 12601493669 in words is "twelve billion, six hundred one million, four hundred ninety-three thousand, six hundred sixty-nine".