34356434021 has 24 divisors (see below), whose sum is σ = 42584445504. Its totient is φ = 27140106240.

The previous prime is 34356434017. The next prime is 34356434071. The reversal of 34356434021 is 12043465343.

It is not a de Polignac number, because 34356434021 - 2² = 34356434017 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 (34356434071) 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 23 ways as a sum of consecutive naturals, for example, 735650 + ... + 780956.

It is an arithmetic number, because the mean of its divisors is an integer number (1774351896).

Almost surely, 2^34356434021 is an apocalyptic number.

It is an amenable number.

34356434021 is a deficient number, since it is larger than the sum of its proper divisors (8228011483).

34356434021 is a wasteful number, since it uses less digits than its factorization.

34356434021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45981 (or 45968 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 34356434021 its reverse (12043465343), we get a palindrome (46399899364).

The spelling of 34356434021 in words is "thirty-four billion, three hundred fifty-six million, four hundred thirty-four thousand, twenty-one".