66299487143 has 4 divisors (see below), whose sum is σ = 66344255328. Its totient is φ = 66254718960.

The previous prime is 66299487113. The next prime is 66299487157. The reversal of 66299487143 is 34178499266.

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-66299487143 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 (66299487113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22381871 + ... + 22384832.

It is an arithmetic number, because the mean of its divisors is an integer number (16586063832).

Almost surely, 2^66299487143 is an apocalyptic number.

66299487143 is a deficient number, since it is larger than the sum of its proper divisors (44768185).

66299487143 is a wasteful number, since it uses less digits than its factorization.

66299487143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44768184.

The product of its digits is 15676416, while the sum is 59.

The spelling of 66299487143 in words is "sixty-six billion, two hundred ninety-nine million, four hundred eighty-seven thousand, one hundred forty-three".