343784721868 has 36 divisors (see below), whose sum is σ = 701406329400. Its totient is φ = 147008128512.

The previous prime is 343784721811. The next prime is 343784721901. The reversal of 343784721868 is 868127487343.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1865230 + ... + 2041237.

It is an arithmetic number, because the mean of its divisors is an integer number (19483509150).

Almost surely, 2^343784721868 is an apocalyptic number.

It is an amenable number.

343784721868 is an abundant number, since it is smaller than the sum of its proper divisors (357621607532).

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

343784721868 is a wasteful number, since it uses less digits than its factorization.

343784721868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906934 (or 3906925 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 61.

The spelling of 343784721868 in words is "three hundred forty-three billion, seven hundred eighty-four million, seven hundred twenty-one thousand, eight hundred sixty-eight".