66714478183 has 4 divisors (see below), whose sum is σ = 66718428088. Its totient is φ = 66710528280.

The previous prime is 66714478133. The next prime is 66714478189. The reversal of 66714478183 is 38187441766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38187441766 = 2 ⋅19093720883.

It is a cyclic number.

It is not a de Polignac number, because 66714478183 - 2⁹ = 66714477671 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 (66714478189) 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, 1949508 + ... + 1983433.

It is an arithmetic number, because the mean of its divisors is an integer number (16679607022).

Almost surely, 2^66714478183 is an apocalyptic number.

66714478183 is a deficient number, since it is larger than the sum of its proper divisors (3949905).

66714478183 is a wasteful number, since it uses less digits than its factorization.

66714478183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949904.

The product of its digits is 5419008, while the sum is 55.

The spelling of 66714478183 in words is "sixty-six billion, seven hundred fourteen million, four hundred seventy-eight thousand, one hundred eighty-three".