12798756400 has 90 divisors (see below), whose sum is σ = 30945141780. Its totient is φ = 5087047680.

The previous prime is 12798756367. The next prime is 12798756401. The reversal of 12798756400 is 465789721.

It is not an unprimeable number, because it can be changed into a prime (12798756401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14899171 + ... + 14900029.

Almost surely, 2^12798756400 is an apocalyptic number.

12798756400 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 12798756400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15472570890).

12798756400 is an abundant number, since it is smaller than the sum of its proper divisors (18146385380).

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

12798756400 is an equidigital number, since it uses as much as digits as its factorization.

12798756400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263 (or 1059 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 12798756400 in words is "twelve billion, seven hundred ninety-eight million, seven hundred fifty-six thousand, four hundred".