5431665544 has 32 divisors (see below), whose sum is σ = 10508359680. Its totient is φ = 2630628864.

The previous prime is 5431665539. The next prime is 5431665557. The reversal of 5431665544 is 4455661345.

It is a self number, because there is not a number n which added to its sum of digits gives 5431665544.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37992 + ... + 110935.

It is an arithmetic number, because the mean of its divisors is an integer number (328386240).

Almost surely, 2^5431665544 is an apocalyptic number.

It is an amenable number.

5431665544 is a deficient number, since it is larger than the sum of its proper divisors (5076694136).

5431665544 is a wasteful number, since it uses less digits than its factorization.

5431665544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149077 (or 149073 counting only the distinct ones).

The product of its digits is 864000, while the sum is 43.

The square root of 5431665544 is about 73699.8340839381. The cubic root of 5431665544 is about 1757.8332435274.

The spelling of 5431665544 in words is "five billion, four hundred thirty-one million, six hundred sixty-five thousand, five hundred forty-four".