12780813000 has 64 divisors (see below), whose sum is σ = 39876145920. Its totient is φ = 3408216000.

The previous prime is 12780812999. The next prime is 12780813037. The reversal of 12780813000 is 31808721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2127136 + ... + 2133135.

It is an arithmetic number, because the mean of its divisors is an integer number (623064780).

Almost surely, 2^12780813000 is an apocalyptic number.

12780813000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12780813000 is an abundant number, since it is smaller than the sum of its proper divisors (27095332920).

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

12780813000 is a wasteful number, since it uses less digits than its factorization.

12780813000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260295 (or 4260281 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The spelling of 12780813000 in words is "twelve billion, seven hundred eighty million, eight hundred thirteen thousand".