2516664331 has 4 divisors (see below), whose sum is σ = 2546985672. Its totient is φ = 2486342992.

The previous prime is 2516664317. The next prime is 2516664391. The reversal of 2516664331 is 1334666152.

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 2516664331 - 2¹⁷ = 2516533259 is a prime.

It is a super-3 number, since 3×2516664331³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2516664391) 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, 15160546 + ... + 15160711.

It is an arithmetic number, because the mean of its divisors is an integer number (636746418).

Almost surely, 2^2516664331 is an apocalyptic number.

2516664331 is a deficient number, since it is larger than the sum of its proper divisors (30321341).

2516664331 is an equidigital number, since it uses as much as digits as its factorization.

2516664331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30321340.

The product of its digits is 77760, while the sum is 37.

The square root of 2516664331 is about 50166.3665317711. The cubic root of 2516664331 is about 1360.2177295222.

The spelling of 2516664331 in words is "two billion, five hundred sixteen million, six hundred sixty-four thousand, three hundred thirty-one".