12668081049 has 32 divisors (see below), whose sum is σ = 20908137600. Its totient is φ = 7526917440.

The previous prime is 12668081017. The next prime is 12668081081. The reversal of 12668081049 is 94018086621.

It is an interprime number because it is at equal distance from previous prime (12668081017) and next prime (12668081081).

It is not a de Polignac number, because 12668081049 - 2⁵ = 12668081017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12668080995 and 12668081013.

It is not an unprimeable number, because it can be changed into a prime (12668081099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 612087 + ... + 632444.

It is an arithmetic number, because the mean of its divisors is an integer number (653379300).

Almost surely, 2^12668081049 is an apocalyptic number.

It is an amenable number.

12668081049 is a deficient number, since it is larger than the sum of its proper divisors (8240056551).

12668081049 is a wasteful number, since it uses less digits than its factorization.

12668081049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244582 (or 1244576 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 12668081049 in words is "twelve billion, six hundred sixty-eight million, eighty-one thousand, forty-nine".