340074317521 has 16 divisors (see below), whose sum is σ = 348007317840. Its totient is φ = 332200028160.

The previous prime is 340074317467. The next prime is 340074317549. The reversal of 340074317521 is 125713470043.

It can be written as a sum of positive squares in 8 ways, for example, as 67683225600 + 272391091921 = 260160^2 + 521911^2 .

It is a cyclic number.

It is not a de Polignac number, because 340074317521 - 2¹⁷ = 340074186449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340074317581) 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 15 ways as a sum of consecutive naturals, for example, 14603275 + ... + 14626543.

It is an arithmetic number, because the mean of its divisors is an integer number (21750457365).

Almost surely, 2^340074317521 is an apocalyptic number.

It is an amenable number.

340074317521 is a deficient number, since it is larger than the sum of its proper divisors (7933000319).

340074317521 is a wasteful number, since it uses less digits than its factorization.

340074317521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24516.

The product of its (nonzero) digits is 70560, while the sum is 37.

Adding to 340074317521 its reverse (125713470043), we get a palindrome (465787787564).

The spelling of 340074317521 in words is "three hundred forty billion, seventy-four million, three hundred seventeen thousand, five hundred twenty-one".