12479233357 has 4 divisors (see below), whose sum is σ = 12509745340. Its totient is φ = 12448721376.

The previous prime is 12479233337. The next prime is 12479233369. The reversal of 12479233357 is 75333297421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75333297421 = 109 ⋅691131169.

It can be written as a sum of positive squares in 2 ways, for example, as 5203313956 + 7275919401 = 72134^2 + 85299^2 .

It is a cyclic number.

It is not a de Polignac number, because 12479233357 - 2⁷ = 12479233229 is a prime.

It is a super-2 number, since 2×12479233357² (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 (12479233337) 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, 15255378 + ... + 15256195.

It is an arithmetic number, because the mean of its divisors is an integer number (3127436335).

Almost surely, 2^12479233357 is an apocalyptic number.

It is an amenable number.

12479233357 is a deficient number, since it is larger than the sum of its proper divisors (30511983).

12479233357 is an equidigital number, since it uses as much as digits as its factorization.

12479233357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30511982.

The product of its digits is 952560, while the sum is 46.

The spelling of 12479233357 in words is "twelve billion, four hundred seventy-nine million, two hundred thirty-three thousand, three hundred fifty-seven".