34034399921 has 2 divisors, whose sum is σ = 34034399922. Its totient is φ = 34034399920.

The previous prime is 34034399887. The next prime is 34034399923. The reversal of 34034399921 is 12999343043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30744115600 + 3290284321 = 175340^2 + 57361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34034399921 is a prime.

Together with 34034399923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (34034399923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17017199960 + 17017199961.

It is an arithmetic number, because the mean of its divisors is an integer number (17017199961).

Almost surely, 2^34034399921 is an apocalyptic number.

It is an amenable number.

34034399921 is a deficient number, since it is larger than the sum of its proper divisors (1).

34034399921 is an equidigital number, since it uses as much as digits as its factorization.

34034399921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 47.

The spelling of 34034399921 in words is "thirty-four billion, thirty-four million, three hundred ninety-nine thousand, nine hundred twenty-one".