12776489578 has 8 divisors (see below), whose sum is σ = 19235453760. Its totient is φ = 6364671660.

The previous prime is 12776489567. The next prime is 12776489591. The reversal of 12776489578 is 87598467721.

12776489578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11785888 + ... + 11786971.

It is an arithmetic number, because the mean of its divisors is an integer number (2404431720).

Almost surely, 2^12776489578 is an apocalyptic number.

12776489578 is a deficient number, since it is larger than the sum of its proper divisors (6458964182).

12776489578 is a wasteful number, since it uses less digits than its factorization.

12776489578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23573132.

The product of its digits is 47416320, while the sum is 64.

The spelling of 12776489578 in words is "twelve billion, seven hundred seventy-six million, four hundred eighty-nine thousand, five hundred seventy-eight".