4068815205 has 128 divisors (see below), whose sum is σ = 8257536000. Its totient is φ = 1699875072.

The previous prime is 4068815203. The next prime is 4068815209. The reversal of 4068815205 is 5025188604.

It is not a de Polignac number, because 4068815205 - 2¹ = 4068815203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4068815203) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8494156 + ... + 8494634.

It is an arithmetic number, because the mean of its divisors is an integer number (64512000).

Almost surely, 2^4068815205 is an apocalyptic number.

It is an amenable number.

4068815205 is an abundant number, since it is smaller than the sum of its proper divisors (4188720795).

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

4068815205 is a wasteful number, since it uses less digits than its factorization.

4068815205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 4068815205 is about 63787.2652259054. The cubic root of 4068815205 is about 1596.4524532845.

The spelling of 4068815205 in words is "four billion, sixty-eight million, eight hundred fifteen thousand, two hundred five".