66711732290023 has 4 divisors (see below), whose sum is σ = 66713532573520. Its totient is φ = 66709932006528.

The previous prime is 66711732290011. The next prime is 66711732290081. The reversal of 66711732290023 is 32009223711766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66711732290023 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 (66711732290323) 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, 900086163 + ... + 900160276.

It is an arithmetic number, because the mean of its divisors is an integer number (16678383143380).

Almost surely, 2^{66711732290023} is an apocalyptic number.

66711732290023 is a deficient number, since it is larger than the sum of its proper divisors (1800283497).

66711732290023 is a wasteful number, since it uses less digits than its factorization.

66711732290023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800283496.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 66711732290023 in words is "sixty-six trillion, seven hundred eleven billion, seven hundred thirty-two million, two hundred ninety thousand, twenty-three".