66283547190238 has 32 divisors (see below), whose sum is σ = 115949051697600. Its totient is φ = 28406951354880.

The previous prime is 66283547190193. The next prime is 66283547190257. The reversal of 66283547190238 is 83209174538266.

It is a self number, because there is not a number n which added to its sum of digits gives 66283547190238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77615370 + ... + 78464722.

It is an arithmetic number, because the mean of its divisors is an integer number (3623407865550).

It is a 2-persistent number, because it is pandigital, and so is 2⋅66283547190238 = 132567094380476, but 3⋅66283547190238 = 198850641570714 is not.

Almost surely, 2^{66283547190238} is an apocalyptic number.

66283547190238 is a deficient number, since it is larger than the sum of its proper divisors (49665504507362).

66283547190238 is a wasteful number, since it uses less digits than its factorization.

66283547190238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963137 (or 963123 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 64.

The spelling of 66283547190238 in words is "sixty-six trillion, two hundred eighty-three billion, five hundred forty-seven million, one hundred ninety thousand, two hundred thirty-eight".