66782850238 has 8 divisors (see below), whose sum is σ = 107879988888. Its totient is φ = 30822853944.

The previous prime is 66782850227. The next prime is 66782850257. The reversal of 66782850238 is 83205828766.

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

It is a super-2 number, since 2×66782850238² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284285556 + ... + 1284285607.

It is an arithmetic number, because the mean of its divisors is an integer number (13484998611).

Almost surely, 2^66782850238 is an apocalyptic number.

66782850238 is a deficient number, since it is larger than the sum of its proper divisors (41097138650).

66782850238 is a wasteful number, since it uses less digits than its factorization.

66782850238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568571178.

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 66782850238 in words is "sixty-six billion, seven hundred eighty-two million, eight hundred fifty thousand, two hundred thirty-eight".