391266068856 has 64 divisors (see below), whose sum is σ = 1053491594400. Its totient is φ = 120380080128.

The previous prime is 391266068849. The next prime is 391266068857. The reversal of 391266068856 is 658860662193.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 391266068856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391266068857) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4628440 + ... + 4712216.

Almost surely, 2^391266068856 is an apocalyptic number.

It is an amenable number.

391266068856 is an abundant number, since it is smaller than the sum of its proper divisors (662225525544).

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

391266068856 is a wasteful number, since it uses less digits than its factorization.

391266068856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98768 (or 98764 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 60.

The spelling of 391266068856 in words is "three hundred ninety-one billion, two hundred sixty-six million, sixty-eight thousand, eight hundred fifty-six".