344443204000021 has 16 divisors (see below), whose sum is σ = 393805006455168. Its totient is φ = 295120332288000.

The previous prime is 344443204000019. The next prime is 344443204000031. The reversal of 344443204000021 is 120000402344443.

It is a cyclic number.

It is not a de Polignac number, because 344443204000021 - 2¹ = 344443204000019 is a prime.

It is a super-2 number, since 2×344443204000021² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344443204000031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178690261 + ... + 180607573.

It is an arithmetic number, because the mean of its divisors is an integer number (24612812903448).

Almost surely, 2^{344443204000021} is an apocalyptic number.

It is an amenable number.

344443204000021 is a deficient number, since it is larger than the sum of its proper divisors (49361802455147).

344443204000021 is a wasteful number, since it uses less digits than its factorization.

344443204000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927452.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 344443204000021 its reverse (120000402344443), we get a palindrome (464443606344464).

The spelling of 344443204000021 in words is "three hundred forty-four trillion, four hundred forty-three billion, two hundred four million, twenty-one", and thus it is an aban number.