8664525511 has 4 divisors (see below), whose sum is σ = 8708508072. Its totient is φ = 8620542952.

The previous prime is 8664525487. The next prime is 8664525517. The reversal of 8664525511 is 1155254668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8664525511 - 2⁵ = 8664525479 is a prime.

It is a super-2 number, since 2×8664525511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8664525517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21990985 + ... + 21991378.

It is an arithmetic number, because the mean of its divisors is an integer number (2177127018).

Almost surely, 2^8664525511 is an apocalyptic number.

8664525511 is a deficient number, since it is larger than the sum of its proper divisors (43982561).

8664525511 is a wasteful number, since it uses less digits than its factorization.

8664525511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43982560.

The product of its digits is 288000, while the sum is 43.

The square root of 8664525511 is about 93083.4330641065. The cubic root of 8664525511 is about 2053.9108774274.

The spelling of 8664525511 in words is "eight billion, six hundred sixty-four million, five hundred twenty-five thousand, five hundred eleven".