4349326581781 has 4 divisors (see below), whose sum is σ = 4455407717964. Its totient is φ = 4243245445600.

The previous prime is 4349326581779. The next prime is 4349326581799. The reversal of 4349326581781 is 1871856239434.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 358884864900 + 3990441716881 = 599070^2 + 1997609^2 .

It is a cyclic number.

It is not a de Polignac number, because 4349326581781 - 2¹ = 4349326581779 is a prime.

It is a super-2 number, since 2×4349326581781² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4349326582781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53040568030 + ... + 53040568111.

It is an arithmetic number, because the mean of its divisors is an integer number (1113851929491).

Almost surely, 2^{4349326581781} is an apocalyptic number.

4349326581781 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4349326581781 is a deficient number, since it is larger than the sum of its proper divisors (106081136183).

4349326581781 is a wasteful number, since it uses less digits than its factorization.

4349326581781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106081136182.

The product of its digits is 34836480, while the sum is 61.

The spelling of 4349326581781 in words is "four trillion, three hundred forty-nine billion, three hundred twenty-six million, five hundred eighty-one thousand, seven hundred eighty-one".