66283859021 has 8 divisors (see below), whose sum is σ = 69775606080. Its totient is φ = 62792424288.

The previous prime is 66283859003. The next prime is 66283859053. The reversal of 66283859021 is 12095838266.

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 66283859021 - 2³⁰ = 65210117197 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 (66283859821) 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, 448760 + ... + 577886.

It is an arithmetic number, because the mean of its divisors is an integer number (8721950760).

Almost surely, 2^66283859021 is an apocalyptic number.

It is an amenable number.

66283859021 is a deficient number, since it is larger than the sum of its proper divisors (3491747059).

66283859021 is a wasteful number, since it uses less digits than its factorization.

66283859021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156163.

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

The spelling of 66283859021 in words is "sixty-six billion, two hundred eighty-three million, eight hundred fifty-nine thousand, twenty-one".