5211583665 has 16 divisors (see below), whose sum is σ = 8829036288. Its totient is φ = 2616010496.

The previous prime is 5211583633. The next prime is 5211583711. The reversal of 5211583665 is 5663851125.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5211583665 - 2⁵ = 5211583633 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, 10218537 + ... + 10219046.

It is an arithmetic number, because the mean of its divisors is an integer number (551814768).

Almost surely, 2^5211583665 is an apocalyptic number.

It is an amenable number.

5211583665 is a deficient number, since it is larger than the sum of its proper divisors (3617452623).

5211583665 is a wasteful number, since it uses less digits than its factorization.

5211583665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20437608.

The product of its digits is 216000, while the sum is 42.

The square root of 5211583665 is about 72191.2990948355. The cubic root of 5211583665 is about 1733.7636955504.

The spelling of 5211583665 in words is "five billion, two hundred eleven million, five hundred eighty-three thousand, six hundred sixty-five".