6344473666613 has 4 divisors (see below), whose sum is σ = 6344554796460. Its totient is φ = 6344392536768.

The previous prime is 6344473666591. The next prime is 6344473666633. The reversal of 6344473666613 is 3166663744436.

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 1695417534724 + 4649056131889 = 1302082^2 + 2156167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6344473666613 is a prime.

It is a super-2 number, since 2×6344473666613² (a number of 26 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 (6344473666633) 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, 40447508 + ... + 40604061.

It is an arithmetic number, because the mean of its divisors is an integer number (1586138699115).

Almost surely, 2^{6344473666613} is an apocalyptic number.

It is an amenable number.

6344473666613 is a deficient number, since it is larger than the sum of its proper divisors (81129847).

6344473666613 is an equidigital number, since it uses as much as digits as its factorization.

6344473666613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81129846.

The product of its digits is 94058496, while the sum is 59.

The spelling of 6344473666613 in words is "six trillion, three hundred forty-four billion, four hundred seventy-three million, six hundred sixty-six thousand, six hundred thirteen".