116561110666 has 48 divisors (see below), whose sum is σ = 236042347968. Its totient is φ = 41920070400.

The previous prime is 116561110577. The next prime is 116561110709. The reversal of 116561110666 is 666011165611.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2213295 + ... + 2265346.

It is an arithmetic number, because the mean of its divisors is an integer number (4917548916).

Almost surely, 2^116561110666 is an apocalyptic number.

116561110666 is an abundant number, since it is smaller than the sum of its proper divisors (119481237302).

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

116561110666 is a wasteful number, since it uses less digits than its factorization.

116561110666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4478687 (or 4478674 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

Subtracting 116561110666 from its reverse (666011165611), we obtain a palindrome (549450054945).

The spelling of 116561110666 in words is "one hundred sixteen billion, five hundred sixty-one million, one hundred ten thousand, six hundred sixty-six".