66900163773 has 8 divisors (see below), whose sum is σ = 90883241568. Its totient is φ = 43758597584.

The previous prime is 66900163747. The next prime is 66900163787. The reversal of 66900163773 is 37736100966.

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

It is a cyclic number.

It is not a de Polignac number, because 66900163773 - 2⁵ = 66900163741 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66900163703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210377715 + ... + 210378032.

It is an arithmetic number, because the mean of its divisors is an integer number (11360405196).

Almost surely, 2^66900163773 is an apocalyptic number.

It is an amenable number.

66900163773 is a deficient number, since it is larger than the sum of its proper divisors (23983077795).

66900163773 is a wasteful number, since it uses less digits than its factorization.

66900163773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420755803.

The product of its (nonzero) digits is 857304, while the sum is 48.

The spelling of 66900163773 in words is "sixty-six billion, nine hundred million, one hundred sixty-three thousand, seven hundred seventy-three".