344407857018 has 8 divisors (see below), whose sum is σ = 688815714048. Its totient is φ = 114802619004.

The previous prime is 344407856987. The next prime is 344407857049. The reversal of 344407857018 is 810758704443.

It is an interprime number because it is at equal distance from previous prime (344407856987) and next prime (344407857049).

It is a sphenic number, since it is the product of 3 distinct primes.

344407857018 is an admirable number.

It is a super-2 number, since 2×344407857018² (a number of 24 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 28700654746 + ... + 28700654757.

It is an arithmetic number, because the mean of its divisors is an integer number (86101964256).

Almost surely, 2^344407857018 is an apocalyptic number.

344407857018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

344407857018 is a wasteful number, since it uses less digits than its factorization.

344407857018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57401309508.

The product of its (nonzero) digits is 3010560, while the sum is 51.

The spelling of 344407857018 in words is "three hundred forty-four billion, four hundred seven million, eight hundred fifty-seven thousand, eighteen".