11110515666 has 16 divisors (see below), whose sum is σ = 22222937088. Its totient is φ = 3703187600.

The previous prime is 11110515643. The next prime is 11110515671. The reversal of 11110515666 is 66651501111.

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, 2956 + ... + 149096.

It is an arithmetic number, because the mean of its divisors is an integer number (1388933568).

Almost surely, 2^11110515666 is an apocalyptic number.

11110515666 is an abundant number, since it is smaller than the sum of its proper divisors (11112421422).

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

11110515666 is a wasteful number, since it uses less digits than its factorization.

11110515666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158817.

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 11110515666 in words is "eleven billion, one hundred ten million, five hundred fifteen thousand, six hundred sixty-six".