12880665345 has 16 divisors (see below), whose sum is σ = 21693752640. Its totient is φ = 6508125504.

The previous prime is 12880665319. The next prime is 12880665359. The reversal of 12880665345 is 54356608821.

It is a happy number.

It is not a de Polignac number, because 12880665345 - 2¹⁵ = 12880632577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12880665294 and 12880665303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22597374 + ... + 22597943.

It is an arithmetic number, because the mean of its divisors is an integer number (1355859540).

Almost surely, 2^12880665345 is an apocalyptic number.

12880665345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12880665345 is a deficient number, since it is larger than the sum of its proper divisors (8813087295).

12880665345 is a wasteful number, since it uses less digits than its factorization.

12880665345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45195344.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 12880665345 in words is "twelve billion, eight hundred eighty million, six hundred sixty-five thousand, three hundred forty-five".