13446644845631 has 4 divisors (see below), whose sum is σ = 13446660086352. Its totient is φ = 13446629604912.

The previous prime is 13446644845597. The next prime is 13446644845691. The reversal of 13446644845631 is 13654844664431.

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

It is a cyclic number.

It is not a de Polignac number, because 13446644845631 - 2³⁰ = 13445571103807 is a prime.

It is a super-2 number, since 2×13446644845631² (a number of 27 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 (13446644845691) 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, 6209915 + ... + 8090508.

It is an arithmetic number, because the mean of its divisors is an integer number (3361665021588).

Almost surely, 2^{13446644845631} is an apocalyptic number.

13446644845631 is a deficient number, since it is larger than the sum of its proper divisors (15240721).

13446644845631 is an equidigital number, since it uses as much as digits as its factorization.

13446644845631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15240720.

The product of its digits is 79626240, while the sum is 59.

The spelling of 13446644845631 in words is "thirteen trillion, four hundred forty-six billion, six hundred forty-four million, eight hundred forty-five thousand, six hundred thirty-one".