66566501110 has 32 divisors (see below), whose sum is σ = 123968024640. Its totient is φ = 25704997248.

The previous prime is 66566501087. The next prime is 66566501117. The reversal of 66566501110 is 1110566566.

It is a self number, because there is not a number n which added to its sum of digits gives 66566501110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66566501117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3686464 + ... + 3704476.

It is an arithmetic number, because the mean of its divisors is an integer number (3874000770).

Almost surely, 2^66566501110 is an apocalyptic number.

66566501110 is a deficient number, since it is larger than the sum of its proper divisors (57401523530).

66566501110 is a wasteful number, since it uses less digits than its factorization.

66566501110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30792.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 66566501110 in words is "sixty-six billion, five hundred sixty-six million, five hundred one thousand, one hundred ten".