66614668745 has 8 divisors (see below), whose sum is σ = 80949471360. Its totient is φ = 52617155760.

The previous prime is 66614668733. The next prime is 66614668751. The reversal of 66614668745 is 54786641666.

66614668745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 66614668745 - 2⁸ = 66614668489 is a prime.

It is a Curzon number.

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, 84321971 + ... + 84322760.

It is an arithmetic number, because the mean of its divisors is an integer number (10118683920).

Almost surely, 2^66614668745 is an apocalyptic number.

It is an amenable number.

66614668745 is a deficient number, since it is larger than the sum of its proper divisors (14334802615).

66614668745 is a wasteful number, since it uses less digits than its factorization.

66614668745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168644815.

The product of its digits is 34836480, while the sum is 59.

The spelling of 66614668745 in words is "sixty-six billion, six hundred fourteen million, six hundred sixty-eight thousand, seven hundred forty-five".