34036021521 has 24 divisors (see below), whose sum is σ = 52065229320. Its totient is φ = 21351776256.

The previous prime is 34036021517. The next prime is 34036021531. The reversal of 34036021521 is 12512063043.

34036021521 is a `hidden beast` number, since 3 + 4 + 0 + 3 + 602 + 1 + 52 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4030853121 + 30005168400 = 63489^2 + 173220^2 .

It is not a de Polignac number, because 34036021521 - 2² = 34036021517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (34036021511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 892125 + ... + 929493.

It is an arithmetic number, because the mean of its divisors is an integer number (2169384555).

Almost surely, 2^34036021521 is an apocalyptic number.

It is an amenable number.

34036021521 is a deficient number, since it is larger than the sum of its proper divisors (18029207799).

34036021521 is a wasteful number, since it uses less digits than its factorization.

34036021521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43345 (or 43342 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 34036021521 its reverse (12512063043), we get a palindrome (46548084564).

The spelling of 34036021521 in words is "thirty-four billion, thirty-six million, twenty-one thousand, five hundred twenty-one".