34205351621 has 8 divisors (see below), whose sum is σ = 39267131904. Its totient is φ = 29187396720.

The previous prime is 34205351519. The next prime is 34205351647. The reversal of 34205351621 is 12615350243.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34205351621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34205351681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10954670 + ... + 10957791.

It is an arithmetic number, because the mean of its divisors is an integer number (4908391488).

Almost surely, 2^34205351621 is an apocalyptic number.

It is an amenable number.

34205351621 is a deficient number, since it is larger than the sum of its proper divisors (5061780283).

34205351621 is a wasteful number, since it uses less digits than its factorization.

34205351621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21912691.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 34205351621 in words is "thirty-four billion, two hundred five million, three hundred fifty-one thousand, six hundred twenty-one".