34256968721 has 4 divisors (see below), whose sum is σ = 34475166132. Its totient is φ = 34038771312.

The previous prime is 34256968699. The next prime is 34256968727. The reversal of 34256968721 is 12786965243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12786965243 = 13 ⋅983612711.

It can be written as a sum of positive squares in 2 ways, for example, as 13355038096 + 20901930625 = 115564^2 + 144575^2 .

It is a cyclic number.

It is not a de Polignac number, because 34256968721 - 2⁶ = 34256968657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34256968727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109098470 + ... + 109098783.

It is an arithmetic number, because the mean of its divisors is an integer number (8618791533).

Almost surely, 2^34256968721 is an apocalyptic number.

It is an amenable number.

34256968721 is a deficient number, since it is larger than the sum of its proper divisors (218197411).

34256968721 is a wasteful number, since it uses less digits than its factorization.

34256968721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218197410.

The product of its digits is 4354560, while the sum is 53.

The spelling of 34256968721 in words is "thirty-four billion, two hundred fifty-six million, nine hundred sixty-eight thousand, seven hundred twenty-one".