34321720001 has 4 divisors (see below), whose sum is σ = 34322558400. Its totient is φ = 34320881604.

The previous prime is 34321719989. The next prime is 34321720021. The reversal of 34321720001 is 10002712343.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34321720001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (34321720021) 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, 354461 + ... + 440778.

It is an arithmetic number, because the mean of its divisors is an integer number (8580639600).

Almost surely, 2^34321720001 is an apocalyptic number.

It is an amenable number.

34321720001 is a deficient number, since it is larger than the sum of its proper divisors (838399).

34321720001 is an equidigital number, since it uses as much as digits as its factorization.

34321720001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838398.

The product of its (nonzero) digits is 1008, while the sum is 23.

The spelling of 34321720001 in words is "thirty-four billion, three hundred twenty-one million, seven hundred twenty thousand, one".