66513323143 has 8 divisors (see below), whose sum is σ = 68811644880. Its totient is φ = 64215318720.

The previous prime is 66513323141. The next prime is 66513323231. The reversal of 66513323143 is 34132331566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66513323143 - 2¹ = 66513323141 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 (66513323141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395371 + ... + 537907.

It is an arithmetic number, because the mean of its divisors is an integer number (8601455610).

Almost surely, 2^66513323143 is an apocalyptic number.

66513323143 is a deficient number, since it is larger than the sum of its proper divisors (2298321737).

66513323143 is a wasteful number, since it uses less digits than its factorization.

66513323143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158657.

The product of its digits is 116640, while the sum is 37.

The spelling of 66513323143 in words is "sixty-six billion, five hundred thirteen million, three hundred twenty-three thousand, one hundred forty-three".