12791290216 has 8 divisors (see below), whose sum is σ = 23983669170. Its totient is φ = 6395645104.

The previous prime is 12791290201. The next prime is 12791290231. The reversal of 12791290216 is 61209219721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12791290201) and next prime (12791290231).

It can be written as a sum of positive squares in only one way, i.e., 7577006116 + 5214284100 = 87046^2 + 72210^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 799455631 + ... + 799455646.

Almost surely, 2^12791290216 is an apocalyptic number.

It is an amenable number.

12791290216 is a deficient number, since it is larger than the sum of its proper divisors (11192378954).

12791290216 is a wasteful number, since it uses less digits than its factorization.

12791290216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598911283 (or 1598911279 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 12791290216 in words is "twelve billion, seven hundred ninety-one million, two hundred ninety thousand, two hundred sixteen".