66479043833 has 4 divisors (see below), whose sum is σ = 66479783568. Its totient is φ = 66478304100.

The previous prime is 66479043803. The next prime is 66479043859. The reversal of 66479043833 is 33834097466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 66479043833 - 2¹⁴ = 66479027449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66479043803) 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, 212843 + ... + 422208.

It is an arithmetic number, because the mean of its divisors is an integer number (16619945892).

Almost surely, 2^66479043833 is an apocalyptic number.

It is an amenable number.

66479043833 is a deficient number, since it is larger than the sum of its proper divisors (739735).

66479043833 is a wasteful number, since it uses less digits than its factorization.

66479043833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739734.

The product of its (nonzero) digits is 7838208, while the sum is 53.

The spelling of 66479043833 in words is "sixty-six billion, four hundred seventy-nine million, forty-three thousand, eight hundred thirty-three".