12617043856816 has 80 divisors (see below), whose sum is σ = 28920656959488. Its totient is φ = 5218050816000.

The previous prime is 12617043856801. The next prime is 12617043856831. The reversal of 12617043856816 is 61865834071621.

It is an interprime number because it is at equal distance from previous prime (12617043856801) and next prime (12617043856831).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3921610 + ... + 6372841.

Almost surely, 2^{12617043856816} is an apocalyptic number.

12617043856816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12617043856816 is an abundant number, since it is smaller than the sum of its proper divisors (16303613102672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12617043856816 is a wasteful number, since it uses less digits than its factorization.

12617043856816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10294850 (or 10294844 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 12617043856816 in words is "twelve trillion, six hundred seventeen billion, forty-three million, eight hundred fifty-six thousand, eight hundred sixteen".