5256516667 has 4 divisors (see below), whose sum is σ = 5258534040. Its totient is φ = 5254499296.

The previous prime is 5256516659. The next prime is 5256516673. The reversal of 5256516667 is 7666156525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5256516667 - 2³ = 5256516659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5256516667.

It is not an unprimeable number, because it can be changed into a prime (5256516367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004773 + ... + 1009990.

It is an arithmetic number, because the mean of its divisors is an integer number (1314633510).

Almost surely, 2^5256516667 is an apocalyptic number.

5256516667 is a deficient number, since it is larger than the sum of its proper divisors (2017373).

5256516667 is a wasteful number, since it uses less digits than its factorization.

5256516667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017372.

The product of its digits is 2268000, while the sum is 49.

The square root of 5256516667 is about 72501.8390594335. The cubic root of 5256516667 is about 1738.7321396536.

The spelling of 5256516667 in words is "five billion, two hundred fifty-six million, five hundred sixteen thousand, six hundred sixty-seven".