5251718765 has 16 divisors (see below), whose sum is σ = 6487931520. Its totient is φ = 4078008000.

The previous prime is 5251718743. The next prime is 5251718803. The reversal of 5251718765 is 5678171525.

It is not a de Polignac number, because 5251718765 - 2⁶ = 5251718701 is a prime.

It is a congruent 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, 43640 + ... + 111390.

It is an arithmetic number, because the mean of its divisors is an integer number (405495720).

Almost surely, 2^5251718765 is an apocalyptic number.

It is an amenable number.

5251718765 is a deficient number, since it is larger than the sum of its proper divisors (1236212755).

5251718765 is a wasteful number, since it uses less digits than its factorization.

5251718765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68212.

The product of its digits is 588000, while the sum is 47.

The square root of 5251718765 is about 72468.7433656746. The cubic root of 5251718765 is about 1738.2029675567.

The spelling of 5251718765 in words is "five billion, two hundred fifty-one million, seven hundred eighteen thousand, seven hundred sixty-five".