66650702183 has 4 divisors (see below), whose sum is σ = 71777679288. Its totient is φ = 61523725080.

The previous prime is 66650702171. The next prime is 66650702189. The reversal of 66650702183 is 38120705666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38120705666 = 2 ⋅19060352833.

It is a cyclic number.

It is not a de Polignac number, because 66650702183 - 2¹² = 66650698087 is a prime.

It is a super-2 number, since 2×66650702183² (a number of 22 digits) contains 22 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 (66650702189) 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, 2563488533 + ... + 2563488558.

It is an arithmetic number, because the mean of its divisors is an integer number (17944419822).

Almost surely, 2^66650702183 is an apocalyptic number.

66650702183 is a deficient number, since it is larger than the sum of its proper divisors (5126977105).

66650702183 is a wasteful number, since it uses less digits than its factorization.

66650702183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126977104.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 66650702183 in words is "sixty-six billion, six hundred fifty million, seven hundred two thousand, one hundred eighty-three".