68204905434 has 24 divisors (see below), whose sum is σ = 147832274772. Its totient is φ = 22726510080.

The previous prime is 68204905411. The next prime is 68204905453. The reversal of 68204905434 is 43450940286.

68204905434 is a `hidden beast` number, since 6 + 8 + 204 + 9 + 0 + 5 + 434 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 64178622225 + 4026283209 = 253335^2 + 63453^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 68204905434.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 655047 + ... + 751994.

Almost surely, 2^68204905434 is an apocalyptic number.

68204905434 is an abundant number, since it is smaller than the sum of its proper divisors (79627369338).

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

68204905434 is a wasteful number, since it uses less digits than its factorization.

68204905434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409742 (or 1409739 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 68204905434 in words is "sixty-eight billion, two hundred four million, nine hundred five thousand, four hundred thirty-four".