7532115666 has 16 divisors (see below), whose sum is σ = 15311186688. Its totient is φ = 2469546000.

The previous prime is 7532115653. The next prime is 7532115671. The reversal of 7532115666 is 6665112357.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10289410 + ... + 10290141.

It is an arithmetic number, because the mean of its divisors is an integer number (956949168).

Almost surely, 2^7532115666 is an apocalyptic number.

7532115666 is an abundant number, since it is smaller than the sum of its proper divisors (7779071022).

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

7532115666 is a wasteful number, since it uses less digits than its factorization.

7532115666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20579617.

The product of its digits is 226800, while the sum is 42.

The square root of 7532115666 is about 86787.7621902996. The cubic root of 7532115666 is about 1960.2238105176.

The spelling of 7532115666 in words is "seven billion, five hundred thirty-two million, one hundred fifteen thousand, six hundred sixty-six".