66822599543 has 8 divisors (see below), whose sum is σ = 76404338688. Its totient is φ = 57249773784.

The previous prime is 66822599531. The next prime is 66822599581. The reversal of 66822599543 is 34599522866.

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

It is not a de Polignac number, because 66822599543 - 2⁸ = 66822599287 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 (66821599543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2212271 + ... + 2242272.

It is an arithmetic number, because the mean of its divisors is an integer number (9550542336).

Almost surely, 2^66822599543 is an apocalyptic number.

66822599543 is a deficient number, since it is larger than the sum of its proper divisors (9581739145).

66822599543 is a wasteful number, since it uses less digits than its factorization.

66822599543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456693.

The product of its digits is 27993600, while the sum is 59.

The spelling of 66822599543 in words is "sixty-six billion, eight hundred twenty-two million, five hundred ninety-nine thousand, five hundred forty-three".