12779395230784 has 56 divisors (see below), whose sum is σ = 31211215289408. Its totient is φ = 5055584924160.

The previous prime is 12779395230727. The next prime is 12779395230821. The reversal of 12779395230784 is 48703259397721.

It is a tau number, because it is divible by the number of its divisors (56).

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, 1097126322 + ... + 1097137969.

It is an arithmetic number, because the mean of its divisors is an integer number (557343130168).

Almost surely, 2^{12779395230784} is an apocalyptic number.

12779395230784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12779395230784 is an abundant number, since it is smaller than the sum of its proper divisors (18431820058624).

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

12779395230784 is a wasteful number, since it uses less digits than its factorization.

12779395230784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194264323 (or 2194264313 counting only the distinct ones).

The product of its (nonzero) digits is 160030080, while the sum is 67.

The spelling of 12779395230784 in words is "twelve trillion, seven hundred seventy-nine billion, three hundred ninety-five million, two hundred thirty thousand, seven hundred eighty-four".