13312637279 has 4 divisors (see below), whose sum is σ = 13313070480. Its totient is φ = 13312204080.

The previous prime is 13312637257. The next prime is 13312637281. The reversal of 13312637279 is 97273621331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97273621331 = 229 ⋅424775639.

It is a cyclic number.

It is not a de Polignac number, because 13312637279 - 2¹² = 13312633183 is a prime.

It is a super-2 number, since 2×13312637279² (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 (13312637249) 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, 166667 + ... + 233244.

It is an arithmetic number, because the mean of its divisors is an integer number (3328267620).

Almost surely, 2^13312637279 is an apocalyptic number.

13312637279 is a deficient number, since it is larger than the sum of its proper divisors (433201).

13312637279 is an equidigital number, since it uses as much as digits as its factorization.

13312637279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433200.

The product of its digits is 285768, while the sum is 44.

The spelling of 13312637279 in words is "thirteen billion, three hundred twelve million, six hundred thirty-seven thousand, two hundred seventy-nine".