66660615110 has 8 divisors (see below), whose sum is σ = 119989107216. Its totient is φ = 26664246040.

The previous prime is 66660615107. The next prime is 66660615137. The reversal of 66660615110 is 1151606666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3333030746 + ... + 3333030765.

It is an arithmetic number, because the mean of its divisors is an integer number (14998638402).

Almost surely, 2^66660615110 is an apocalyptic number.

66660615110 is a deficient number, since it is larger than the sum of its proper divisors (53328492106).

66660615110 is a wasteful number, since it uses less digits than its factorization.

66660615110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666061518.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 66660615110 in words is "sixty-six billion, six hundred sixty million, six hundred fifteen thousand, one hundred ten".