12995558619840 has 224 divisors, whose sum is σ = 45847904808960. Its totient is φ = 3465296206848.

The previous prime is 12995558619803. The next prime is 12995558619847. The reversal of 12995558619840 is 4891685559921.

12995558619840 is a `hidden beast` number, since 1 + 2 + 9 + 9 + 5 + 558 + 61 + 9 + 8 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (12995558619847) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 251596897 + ... + 251648543.

Almost surely, 2^{12995558619840} is an apocalyptic number.

12995558619840 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 12995558619840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22923952404480).

12995558619840 is an abundant number, since it is smaller than the sum of its proper divisors (32852346189120).

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

12995558619840 is a wasteful number, since it uses less digits than its factorization.

12995558619840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80796 (or 80780 counting only the distinct ones).

The product of its (nonzero) digits is 279936000, while the sum is 72.

The spelling of 12995558619840 in words is "twelve trillion, nine hundred ninety-five billion, five hundred fifty-eight million, six hundred nineteen thousand, eight hundred forty".