12918280319 has 16 divisors (see below), whose sum is σ = 14858274816. Its totient is φ = 11002068000.

The previous prime is 12918280223. The next prime is 12918280327. The reversal of 12918280319 is 91308281921.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-12918280319 is a prime.

It is a super-2 number, since 2×12918280319² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12918280319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918280819) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1112594 + ... + 1124144.

It is an arithmetic number, because the mean of its divisors is an integer number (928642176).

Almost surely, 2^12918280319 is an apocalyptic number.

12918280319 is a deficient number, since it is larger than the sum of its proper divisors (1939994497).

12918280319 is a wasteful number, since it uses less digits than its factorization.

12918280319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12566.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 12918280319 in words is "twelve billion, nine hundred eighteen million, two hundred eighty thousand, three hundred nineteen".