344352455421 has 32 divisors (see below), whose sum is σ = 495343392768. Its totient is φ = 211528743360.

The previous prime is 344352455339. The next prime is 344352455423. The reversal of 344352455421 is 124554253443.

It is not a de Polignac number, because 344352455421 - 2¹⁴ = 344352439037 is a prime.

It is a super-2 number, since 2×344352455421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344352455423) 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 31 ways as a sum of consecutive naturals, for example, 78420136 + ... + 78424526.

It is an arithmetic number, because the mean of its divisors is an integer number (15479481024).

Almost surely, 2^344352455421 is an apocalyptic number.

It is an amenable number.

344352455421 is a deficient number, since it is larger than the sum of its proper divisors (150990937347).

344352455421 is a wasteful number, since it uses less digits than its factorization.

344352455421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7561.

The product of its digits is 1152000, while the sum is 42.

The spelling of 344352455421 in words is "three hundred forty-four billion, three hundred fifty-two million, four hundred fifty-five thousand, four hundred twenty-one".