66168156614 has 16 divisors (see below), whose sum is σ = 113448676896. Its totient is φ = 28353393600.

The previous prime is 66168156601. The next prime is 66168156623. The reversal of 66168156614 is 41665186166.

It is a Curzon number.

It is a congruent 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, 271097 + ... + 453684.

It is an arithmetic number, because the mean of its divisors is an integer number (7090542306).

Almost surely, 2^66168156614 is an apocalyptic number.

66168156614 is a deficient number, since it is larger than the sum of its proper divisors (47280520282).

66168156614 is a wasteful number, since it uses less digits than its factorization.

66168156614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731311.

The product of its digits is 1244160, while the sum is 50.

The spelling of 66168156614 in words is "sixty-six billion, one hundred sixty-eight million, one hundred fifty-six thousand, six hundred fourteen".