12880665481 has 2 divisors, whose sum is σ = 12880665482. Its totient is φ = 12880665480.

The previous prime is 12880665467. The next prime is 12880665517. The reversal of 12880665481 is 18456608821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12670879225 + 209786256 = 112565^2 + 14484^2 .

It is a cyclic number.

It is not a de Polignac number, because 12880665481 - 2¹⁹ = 12880141193 is a prime.

It is a super-2 number, since 2×12880665481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12880665461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6440332740 + 6440332741.

It is an arithmetic number, because the mean of its divisors is an integer number (6440332741).

Almost surely, 2^12880665481 is an apocalyptic number.

It is an amenable number.

12880665481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12880665481 is an equidigital number, since it uses as much as digits as its factorization.

12880665481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 737280, while the sum is 49.

The spelling of 12880665481 in words is "twelve billion, eight hundred eighty million, six hundred sixty-five thousand, four hundred eighty-one".