11523432666 has 16 divisors (see below), whose sum is σ = 23362576704. Its totient is φ = 3788525664.

The previous prime is 11523432637. The next prime is 11523432667. The reversal of 11523432666 is 66623432511.

It is not an unprimeable number, because it can be changed into a prime (11523432667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13154166 + ... + 13155041.

It is an arithmetic number, because the mean of its divisors is an integer number (1460161044).

Almost surely, 2^11523432666 is an apocalyptic number.

11523432666 is an abundant number, since it is smaller than the sum of its proper divisors (11839144038).

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

11523432666 is a wasteful number, since it uses less digits than its factorization.

11523432666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26309285.

The product of its digits is 155520, while the sum is 39.

The spelling of 11523432666 in words is "eleven billion, five hundred twenty-three million, four hundred thirty-two thousand, six hundred sixty-six".