12817605776 has 20 divisors (see below), whose sum is σ = 24838684032. Its totient is φ = 6407622816.

The previous prime is 12817605769. The next prime is 12817605781. The reversal of 12817605776 is 67750671821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19421 + ... + 161283.

Almost surely, 2^12817605776 is an apocalyptic number.

12817605776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12817605776 is a deficient number, since it is larger than the sum of its proper divisors (12021078256).

12817605776 is a wasteful number, since it uses less digits than its factorization.

12817605776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147518 (or 147512 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 50.

The spelling of 12817605776 in words is "twelve billion, eight hundred seventeen million, six hundred five thousand, seven hundred seventy-six".