8523772905 has 16 divisors (see below), whose sum is σ = 13651038144. Its totient is φ = 4541678400.

The previous prime is 8523772867. The next prime is 8523772909. The reversal of 8523772905 is 5092773258.

It is a happy number.

It is not a de Polignac number, because 8523772905 - 2²¹ = 8521675753 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8523772909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254574 + ... + 286103.

It is an arithmetic number, because the mean of its divisors is an integer number (853189884).

Almost surely, 2^8523772905 is an apocalyptic number.

It is an amenable number.

8523772905 is a deficient number, since it is larger than the sum of its proper divisors (5127265239).

8523772905 is a wasteful number, since it uses less digits than its factorization.

8523772905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541736.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 8523772905 is about 92324.2812319706. The cubic root of 8523772905 is about 2042.7283838691.

The spelling of 8523772905 in words is "eight billion, five hundred twenty-three million, seven hundred seventy-two thousand, nine hundred five".