3644851677613 has 2 divisors, whose sum is σ = 3644851677614. Its totient is φ = 3644851677612.

The previous prime is 3644851677589. The next prime is 3644851677647. The reversal of 3644851677613 is 3167761584463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2536941757284 + 1107909920329 = 1592778^2 + 1052573^2 .

It is a cyclic number.

It is not a de Polignac number, because 3644851677613 - 2³⁷ = 3507412724141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3644851675613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822425838806 + 1822425838807.

It is an arithmetic number, because the mean of its divisors is an integer number (1822425838807).

Almost surely, 2^{3644851677613} is an apocalyptic number.

It is an amenable number.

3644851677613 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644851677613 is an equidigital number, since it uses as much as digits as its factorization.

3644851677613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60963840, while the sum is 61.

The spelling of 3644851677613 in words is "three trillion, six hundred forty-four billion, eight hundred fifty-one million, six hundred seventy-seven thousand, six hundred thirteen".