12678699960 has 288 divisors, whose sum is σ = 45409487760. Its totient is φ = 3170617344.

The previous prime is 12678699949. The next prime is 12678700009. The reversal of 12678699960 is 6999687621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 45771342 + ... + 45771618.

Almost surely, 2^12678699960 is an apocalyptic number.

12678699960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12678699960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22704743880).

12678699960 is an abundant number, since it is smaller than the sum of its proper divisors (32730787800).

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

12678699960 is an equidigital number, since it uses as much as digits as its factorization.

12678699960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 12678699960 in words is "twelve billion, six hundred seventy-eight million, six hundred ninety-nine thousand, nine hundred sixty".