8521953768 has 48 divisors (see below), whose sum is σ = 23085766080. Its totient is φ = 2839977504.

The previous prime is 8521953761. The next prime is 8521953773. The reversal of 8521953768 is 8673591258.

8521953768 is a `hidden beast` number, since 8 + 521 + 9 + 53 + 7 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (8521953761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 360571 + ... + 383477.

It is an arithmetic number, because the mean of its divisors is an integer number (480953460).

Almost surely, 2^8521953768 is an apocalyptic number.

It is an amenable number.

8521953768 is an abundant number, since it is smaller than the sum of its proper divisors (14563812312).

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

8521953768 is a wasteful number, since it uses less digits than its factorization.

8521953768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28086 (or 28079 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 8521953768 is about 92314.4288180347. The cubic root of 8521953768 is about 2042.5830543610.

The spelling of 8521953768 in words is "eight billion, five hundred twenty-one million, nine hundred fifty-three thousand, seven hundred sixty-eight".