66476867467 has 4 divisors (see below), whose sum is σ = 66477919960. Its totient is φ = 66475814976.

The previous prime is 66476867461. The next prime is 66476867603. The reversal of 66476867467 is 76476867466.

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-66476867467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66476867461) 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, 425013 + ... + 559990.

It is an arithmetic number, because the mean of its divisors is an integer number (16619479990).

Almost surely, 2^66476867467 is an apocalyptic number.

66476867467 is a deficient number, since it is larger than the sum of its proper divisors (1052493).

66476867467 is an equidigital number, since it uses as much as digits as its factorization.

66476867467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052492.

The product of its digits is 341397504, while the sum is 67.

Subtracting 66476867467 from its reverse (76476867466), we obtain a palindrome (9999999999).

The spelling of 66476867467 in words is "sixty-six billion, four hundred seventy-six million, eight hundred sixty-seven thousand, four hundred sixty-seven".