12780806408 has 32 divisors (see below), whose sum is σ = 24529824000. Its totient is φ = 6239623488.

The previous prime is 12780806299. The next prime is 12780806429. The reversal of 12780806408 is 80460808721.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491785 + ... + 1500327.

It is an arithmetic number, because the mean of its divisors is an integer number (766557000).

Almost surely, 2^12780806408 is an apocalyptic number.

It is an amenable number.

12780806408 is a deficient number, since it is larger than the sum of its proper divisors (11749017592).

12780806408 is a wasteful number, since it uses less digits than its factorization.

12780806408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12941 (or 12937 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 12780806408 in words is "twelve billion, seven hundred eighty million, eight hundred six thousand, four hundred eight".