66350243471 has 4 divisors (see below), whose sum is σ = 66370359000. Its totient is φ = 66330127944.

The previous prime is 66350243419. The next prime is 66350243473. The reversal of 66350243471 is 17434205366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17434205366 = 2 ⋅8717102683.

It is a cyclic number.

It is not a de Polignac number, because 66350243471 - 2³⁴ = 49170374287 is a prime.

It is a super-3 number, since 3×66350243471³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66350243473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10052816 + ... + 10059413.

It is an arithmetic number, because the mean of its divisors is an integer number (16592589750).

Almost surely, 2^66350243471 is an apocalyptic number.

66350243471 is a deficient number, since it is larger than the sum of its proper divisors (20115529).

66350243471 is a wasteful number, since it uses less digits than its factorization.

66350243471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20115528.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 66350243471 in words is "sixty-six billion, three hundred fifty million, two hundred forty-three thousand, four hundred seventy-one".