34235253872821 has 4 divisors (see below), whose sum is σ = 34245482514912. Its totient is φ = 34225025230732.

The previous prime is 34235253872773. The next prime is 34235253872927. The reversal of 34235253872821 is 12827835253243.

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 not a de Polignac number, because 34235253872821 - 2²³ = 34235245484213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34235253872621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5114316025 + ... + 5114322718.

It is an arithmetic number, because the mean of its divisors is an integer number (8561370628728).

Almost surely, 2^{34235253872821} is an apocalyptic number.

It is an amenable number.

34235253872821 is a deficient number, since it is larger than the sum of its proper divisors (10228642091).

34235253872821 is a wasteful number, since it uses less digits than its factorization.

34235253872821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10228642090.

The product of its digits is 19353600, while the sum is 55.

The spelling of 34235253872821 in words is "thirty-four trillion, two hundred thirty-five billion, two hundred fifty-three million, eight hundred seventy-two thousand, eight hundred twenty-one".