5031256665 has 16 divisors (see below), whose sum is σ = 8073906048. Its totient is φ = 2675371776.

The previous prime is 5031256651. The next prime is 5031256673. The reversal of 5031256665 is 5666521305.

It is not a de Polignac number, because 5031256665 - 2¹³ = 5031248473 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492597 + ... + 502706.

It is an arithmetic number, because the mean of its divisors is an integer number (504619128).

Almost surely, 2^5031256665 is an apocalyptic number.

It is an amenable number.

5031256665 is a deficient number, since it is larger than the sum of its proper divisors (3042649383).

5031256665 is a wasteful number, since it uses less digits than its factorization.

5031256665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995648.

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 5031256665 is about 70931.3517776166. The cubic root of 5031256665 is about 1713.5317571077.

The spelling of 5031256665 in words is "five billion, thirty-one million, two hundred fifty-six thousand, six hundred sixty-five".