312388779764 has 12 divisors (see below), whose sum is σ = 547296695904. Its totient is φ = 156018295224.

The previous prime is 312388779739. The next prime is 312388779797. The reversal of 312388779764 is 467977883213.

It is a self number, because there is not a number n which added to its sum of digits gives 312388779764.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44019674 + ... + 44026769.

It is an arithmetic number, because the mean of its divisors is an integer number (45608057992).

Almost surely, 2^312388779764 is an apocalyptic number.

It is an amenable number.

312388779764 is a deficient number, since it is larger than the sum of its proper divisors (234907916140).

312388779764 is a wasteful number, since it uses less digits than its factorization.

312388779764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88047334 (or 88047332 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 65.

The spelling of 312388779764 in words is "three hundred twelve billion, three hundred eighty-eight million, seven hundred seventy-nine thousand, seven hundred sixty-four".