5644446641 has 16 divisors (see below), whose sum is σ = 6329678400. Its totient is φ = 5001896448.

The previous prime is 5644446631. The next prime is 5644446667. The reversal of 5644446641 is 1466444465.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5644446641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5644446592 and 5644446601.

It is not an unprimeable number, because it can be changed into a prime (5644446631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 956 + ... + 106253.

It is an arithmetic number, because the mean of its divisors is an integer number (395604900).

Almost surely, 2^5644446641 is an apocalyptic number.

It is an amenable number.

5644446641 is a deficient number, since it is larger than the sum of its proper divisors (685231759).

5644446641 is a wasteful number, since it uses less digits than its factorization.

5644446641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107408.

The product of its digits is 1105920, while the sum is 44.

The square root of 5644446641 is about 75129.5324156886. The cubic root of 5644446641 is about 1780.4937654089.

The spelling of 5644446641 in words is "five billion, six hundred forty-four million, four hundred forty-six thousand, six hundred forty-one".