344378252021 has 16 divisors (see below), whose sum is σ = 363183744000. Its totient is φ = 325641222000.

The previous prime is 344378251991. The next prime is 344378252039. The reversal of 344378252021 is 120252873443.

It is a cyclic number.

It is not a de Polignac number, because 344378252021 - 2⁶ = 344378251957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 344378252021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344378252221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 43308596 + ... + 43316546.

It is an arithmetic number, because the mean of its divisors is an integer number (22698984000).

Almost surely, 2^344378252021 is an apocalyptic number.

It is an amenable number.

344378252021 is a deficient number, since it is larger than the sum of its proper divisors (18805491979).

344378252021 is a wasteful number, since it uses less digits than its factorization.

344378252021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11960.

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 344378252021 in words is "three hundred forty-four billion, three hundred seventy-eight million, two hundred fifty-two thousand, twenty-one".