12355855787688 has 128 divisors (see below), whose sum is σ = 37195240704000. Its totient is φ = 3341312674560.

The previous prime is 12355855787647. The next prime is 12355855787713. The reversal of 12355855787688 is 88678755855321.

It is a super-2 number, since 2×12355855787688² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1601733 + ... + 5222763.

It is an arithmetic number, because the mean of its divisors is an integer number (290587818000).

Almost surely, 2^{12355855787688} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12355855787688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18597620352000).

12355855787688 is an abundant number, since it is smaller than the sum of its proper divisors (24839384916312).

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

12355855787688 is a wasteful number, since it uses less digits than its factorization.

12355855787688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622135 (or 3622131 counting only the distinct ones).

The product of its digits is 4515840000, while the sum is 78.

The spelling of 12355855787688 in words is "twelve trillion, three hundred fifty-five billion, eight hundred fifty-five million, seven hundred eighty-seven thousand, six hundred eighty-eight".