5431144665 has 16 divisors (see below), whose sum is σ = 8970149376. Its totient is φ = 2803171200.

The previous prime is 5431144597. The next prime is 5431144709. The reversal of 5431144665 is 5664411345.

It is not a de Polignac number, because 5431144665 - 2¹⁵ = 5431111897 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5839476 + ... + 5840405.

It is an arithmetic number, because the mean of its divisors is an integer number (560634336).

Almost surely, 2^5431144665 is an apocalyptic number.

It is an amenable number.

5431144665 is a deficient number, since it is larger than the sum of its proper divisors (3539004711).

5431144665 is a wasteful number, since it uses less digits than its factorization.

5431144665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11679920.

The product of its digits is 172800, while the sum is 39.

The square root of 5431144665 is about 73696.3002124259. The cubic root of 5431144665 is about 1757.7770515739. Note that the first 3 decimals are identical.

The spelling of 5431144665 in words is "five billion, four hundred thirty-one million, one hundred forty-four thousand, six hundred sixty-five".