5581765664 has 24 divisors (see below), whose sum is σ = 11046647808. Its totient is φ = 2776267840.

The previous prime is 5581765583. The next prime is 5581765681. The reversal of 5581765664 is 4665671855.

It is a happy number.

It is a super-2 number, since 2×5581765664² = 62312215855618721792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450512 + ... + 462735.

It is an arithmetic number, because the mean of its divisors is an integer number (460276992).

Almost surely, 2^5581765664 is an apocalyptic number.

It is an amenable number.

5581765664 is a deficient number, since it is larger than the sum of its proper divisors (5464882144).

5581765664 is a wasteful number, since it uses less digits than its factorization.

5581765664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913448 (or 913440 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 53.

The square root of 5581765664 is about 74711.2151152690. The cubic root of 5581765664 is about 1773.8784862964.

The spelling of 5581765664 in words is "five billion, five hundred eighty-one million, seven hundred sixty-five thousand, six hundred sixty-four".