7665522555 has 16 divisors (see below), whose sum is σ = 12377360160. Its totient is φ = 4050770688.

The previous prime is 7665522533. The next prime is 7665522587. The reversal of 7665522555 is 5552255667.

It is not a de Polignac number, because 7665522555 - 2⁵ = 7665522523 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2342562 + ... + 2345831.

It is an arithmetic number, because the mean of its divisors is an integer number (773585010).

Almost surely, 2^7665522555 is an apocalyptic number.

7665522555 is a deficient number, since it is larger than the sum of its proper divisors (4711837605).

7665522555 is a wasteful number, since it uses less digits than its factorization.

7665522555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688510.

The product of its digits is 3150000, while the sum is 48.

The square root of 7665522555 is about 87552.9699953120. The cubic root of 7665522555 is about 1971.7291418086.

The spelling of 7665522555 in words is "seven billion, six hundred sixty-five million, five hundred twenty-two thousand, five hundred fifty-five".