344386210640 has 20 divisors (see below), whose sum is σ = 800697939924. Its totient is φ = 137754484224.

The previous prime is 344386210621. The next prime is 344386210687. The reversal of 344386210640 is 46012683443.

It can be written as a sum of positive squares in 2 ways, for example, as 248729617984 + 95656592656 = 498728^2 + 309284^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2152413737 + ... + 2152413896.

Almost surely, 2^344386210640 is an apocalyptic number.

It is an amenable number.

344386210640 is an abundant number, since it is smaller than the sum of its proper divisors (456311729284).

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

344386210640 is a wasteful number, since it uses less digits than its factorization.

344386210640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4304827646 (or 4304827640 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 344386210640 in words is "three hundred forty-four billion, three hundred eighty-six million, two hundred ten thousand, six hundred forty".