5215806667 has 2 divisors, whose sum is σ = 5215806668. Its totient is φ = 5215806666.

The previous prime is 5215806619. The next prime is 5215806707. The reversal of 5215806667 is 7666085125.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5215806667 is a prime.

It is not a weakly prime, because it can be changed into another prime (5215806367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2607903333 + 2607903334.

It is an arithmetic number, because the mean of its divisors is an integer number (2607903334).

Almost surely, 2^5215806667 is an apocalyptic number.

5215806667 is a deficient number, since it is larger than the sum of its proper divisors (1).

5215806667 is an equidigital number, since it uses as much as digits as its factorization.

5215806667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 5215806667 is about 72220.5418631015. The cubic root of 5215806667 is about 1734.2318648760.

The spelling of 5215806667 in words is "five billion, two hundred fifteen million, eight hundred six thousand, six hundred sixty-seven".