344855256866 has 16 divisors (see below), whose sum is σ = 529943420160. Its totient is φ = 168208146720.

The previous prime is 344855256857. The next prime is 344855256871. The reversal of 344855256866 is 668652558443.

It is a happy number.

It is a super-2 number, since 2×344855256866² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 344855256799 and 344855256808.

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 7 ways as a sum of consecutive naturals, for example, 859355 + ... + 1195073.

It is an arithmetic number, because the mean of its divisors is an integer number (33121463760).

Almost surely, 2^344855256866 is an apocalyptic number.

344855256866 is a deficient number, since it is larger than the sum of its proper divisors (185088163294).

344855256866 is a wasteful number, since it uses less digits than its factorization.

344855256866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348289.

The product of its digits is 165888000, while the sum is 62.

The spelling of 344855256866 in words is "three hundred forty-four billion, eight hundred fifty-five million, two hundred fifty-six thousand, eight hundred sixty-six".