66919050239 has 8 divisors (see below), whose sum is σ = 67087571712. Its totient is φ = 66750730200.

The previous prime is 66919050199. The next prime is 66919050281. The reversal of 66919050239 is 93205091966.

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

It is a de Polignac number, because none of the positive numbers 2^k-66919050239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66919050299) 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, 626282 + ... + 725304.

It is an arithmetic number, because the mean of its divisors is an integer number (8385946464).

Almost surely, 2^66919050239 is an apocalyptic number.

66919050239 is a deficient number, since it is larger than the sum of its proper divisors (168521473).

66919050239 is a wasteful number, since it uses less digits than its factorization.

66919050239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100717.

The product of its (nonzero) digits is 787320, while the sum is 50.

The spelling of 66919050239 in words is "sixty-six billion, nine hundred nineteen million, fifty thousand, two hundred thirty-nine".