5206698991 has 16 divisors (see below), whose sum is σ = 6158960640. Its totient is φ = 4355255520.

The previous prime is 5206698977. The next prime is 5206699007. The reversal of 5206698991 is 1998966025.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5206698991 - 2⁷ = 5206698863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5206668991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452575 + ... + 463936.

It is an arithmetic number, because the mean of its divisors is an integer number (384935040).

Almost surely, 2^5206698991 is an apocalyptic number.

5206698991 is a deficient number, since it is larger than the sum of its proper divisors (952261649).

5206698991 is a wasteful number, since it uses less digits than its factorization.

5206698991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916566.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The square root of 5206698991 is about 72157.4597044547. The cubic root of 5206698991 is about 1733.2218565593.

The spelling of 5206698991 in words is "five billion, two hundred six million, six hundred ninety-eight thousand, nine hundred ninety-one".