66185797920303 has 16 divisors (see below), whose sum is σ = 92915415662720. Its totient is φ = 41791176114336.

The previous prime is 66185797920301. The next prime is 66185797920317. The reversal of 66185797920303 is 30302979758166.

It is not a de Polignac number, because 66185797920303 - 2¹ = 66185797920301 is a prime.

It is a super-2 number, since 2×66185797920303² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66185797920301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143941600 + ... + 144400677.

It is an arithmetic number, because the mean of its divisors is an integer number (5807213478920).

Almost surely, 2^{66185797920303} is an apocalyptic number.

66185797920303 is a deficient number, since it is larger than the sum of its proper divisors (26729617742417).

66185797920303 is a wasteful number, since it uses less digits than its factorization.

66185797920303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288346326.

The product of its (nonzero) digits is 102876480, while the sum is 66.

The spelling of 66185797920303 in words is "sixty-six trillion, one hundred eighty-five billion, seven hundred ninety-seven million, nine hundred twenty thousand, three hundred three".