12880665515 has 16 divisors (see below), whose sum is σ = 16028695488. Its totient is φ = 9928676736.

The previous prime is 12880665481. The next prime is 12880665517. The reversal of 12880665515 is 51556608821.

It is a cyclic number.

It is not a de Polignac number, because 12880665515 - 2¹² = 12880661419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12880665515.

It is not an unprimeable number, because it can be changed into a prime (12880665517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318932 + ... + 357041.

It is an arithmetic number, because the mean of its divisors is an integer number (1001793468).

Almost surely, 2^12880665515 is an apocalyptic number.

12880665515 is a deficient number, since it is larger than the sum of its proper divisors (3148029973).

12880665515 is a wasteful number, since it uses less digits than its factorization.

12880665515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676118.

The product of its (nonzero) digits is 576000, while the sum is 47.

The spelling of 12880665515 in words is "twelve billion, eight hundred eighty million, six hundred sixty-five thousand, five hundred fifteen".