12645855750 has 128 divisors (see below), whose sum is σ = 34699332096. Its totient is φ = 3042000000.

The previous prime is 12645855713. The next prime is 12645855851. The reversal of 12645855750 is 5755854621.

It is a self number, because there is not a number n which added to its sum of digits gives 12645855750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1074900 + ... + 1086600.

It is an arithmetic number, because the mean of its divisors is an integer number (271088532).

Almost surely, 2^12645855750 is an apocalyptic number.

12645855750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12645855750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17349666048).

12645855750 is an abundant number, since it is smaller than the sum of its proper divisors (22053476346).

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

12645855750 is a wasteful number, since it uses less digits than its factorization.

12645855750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11863 (or 11853 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 48.

The spelling of 12645855750 in words is "twelve billion, six hundred forty-five million, eight hundred fifty-five thousand, seven hundred fifty".