66473868959 has 4 divisors (see below), whose sum is σ = 66582309816. Its totient is φ = 66365428104.

The previous prime is 66473868931. The next prime is 66473868997. The reversal of 66473868959 is 95986837466.

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-66473868959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66473868892 and 66473868901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66473868919) 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, 54219509 + ... + 54220734.

It is an arithmetic number, because the mean of its divisors is an integer number (16645577454).

Almost surely, 2^66473868959 is an apocalyptic number.

66473868959 is a deficient number, since it is larger than the sum of its proper divisors (108440857).

66473868959 is a wasteful number, since it uses less digits than its factorization.

66473868959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108440856.

The product of its digits is 470292480, while the sum is 71.

The spelling of 66473868959 in words is "sixty-six billion, four hundred seventy-three million, eight hundred sixty-eight thousand, nine hundred fifty-nine".