12809161400 has 48 divisors (see below), whose sum is σ = 34035775440. Its totient is φ = 4391712000.

The previous prime is 12809161373. The next prime is 12809161427. The reversal of 12809161400 is 416190821.

It is an interprime number because it is at equal distance from previous prime (12809161373) and next prime (12809161427).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4573301 + ... + 4576100.

It is an arithmetic number, because the mean of its divisors is an integer number (709078655).

Almost surely, 2^12809161400 is an apocalyptic number.

12809161400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12809161400 is an abundant number, since it is smaller than the sum of its proper divisors (21226614040).

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

12809161400 is a wasteful number, since it uses less digits than its factorization.

12809161400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9149424 (or 9149415 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 12809161400 in words is "twelve billion, eight hundred nine million, one hundred sixty-one thousand, four hundred".