5531644369 has 2 divisors, whose sum is σ = 5531644370. Its totient is φ = 5531644368.

The previous prime is 5531644333. The next prime is 5531644387. The reversal of 5531644369 is 9634461355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3233400769 + 2298243600 = 56863^2 + 47940^2 .

It is a cyclic number.

It is not a de Polignac number, because 5531644369 - 2⁷ = 5531644241 is a prime.

It is a super-2 number, since 2×5531644369² = 61198178850178816322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5531645369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2765822184 + 2765822185.

It is an arithmetic number, because the mean of its divisors is an integer number (2765822185).

Almost surely, 2^5531644369 is an apocalyptic number.

It is an amenable number.

5531644369 is a deficient number, since it is larger than the sum of its proper divisors (1).

5531644369 is an equidigital number, since it uses as much as digits as its factorization.

5531644369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 46.

The square root of 5531644369 is about 74375.0251697436. The cubic root of 5531644369 is about 1768.5530184160.

The spelling of 5531644369 in words is "five billion, five hundred thirty-one million, six hundred forty-four thousand, three hundred sixty-nine".