13626144605 has 4 divisors (see below), whose sum is σ = 16351373532. Its totient is φ = 10900915680.

The previous prime is 13626144599. The next prime is 13626144617. The reversal of 13626144605 is 50644162631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50644162631 = 183047 ⋅276673.

It can be written as a sum of positive squares in 2 ways, for example, as 6335204836 + 7290939769 = 79594^2 + 85387^2 .

It is not a de Polignac number, because 13626144605 - 2¹⁶ = 13626079069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1362614456 + ... + 1362614465.

It is an arithmetic number, because the mean of its divisors is an integer number (4087843383).

Almost surely, 2^13626144605 is an apocalyptic number.

It is an amenable number.

13626144605 is a deficient number, since it is larger than the sum of its proper divisors (2725228927).

13626144605 is an equidigital number, since it uses as much as digits as its factorization.

13626144605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725228926.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 13626144605 in words is "thirteen billion, six hundred twenty-six million, one hundred forty-four thousand, six hundred five".