34005921640 has 32 divisors (see below), whose sum is σ = 76536485280. Its totient is φ = 13598251072.

The previous prime is 34005921619. The next prime is 34005921647. The reversal of 34005921640 is 4612950043.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 34005921596 and 34005921605.

It is not an unprimeable number, because it can be changed into a prime (34005921647) 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, 6879 + ... + 260881.

It is an arithmetic number, because the mean of its divisors is an integer number (2391765165).

Almost surely, 2^34005921640 is an apocalyptic number.

It is an amenable number.

34005921640 is an abundant number, since it is smaller than the sum of its proper divisors (42530563640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

34005921640 is a wasteful number, since it uses less digits than its factorization.

34005921640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257361 (or 257357 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 34005921640 in words is "thirty-four billion, five million, nine hundred twenty-one thousand, six hundred forty".