12909772800 has 576 divisors, whose sum is σ = 49440652560. Its totient is φ = 3208642560.

The previous prime is 12909772769. The next prime is 12909772861. The reversal of 12909772800 is 827790921.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 125337549 + ... + 125337651.

Almost surely, 2^12909772800 is an apocalyptic number.

12909772800 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 12909772800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24720326280).

12909772800 is an abundant number, since it is smaller than the sum of its proper divisors (36530879760).

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

12909772800 is a wasteful number, since it uses less digits than its factorization.

12909772800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 12909772800 in words is "twelve billion, nine hundred nine million, seven hundred seventy-two thousand, eight hundred".