66471667566373 has 4 divisors (see below), whose sum is σ = 66471683878080. Its totient is φ = 66471651254668.

The previous prime is 66471667566349. The next prime is 66471667566383. The reversal of 66471667566373 is 37366576617466.

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 66471667566373 - 2¹³ = 66471667558181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66471667566296 and 66471667566305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66471667566323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3755268 + ... + 12126226.

It is an arithmetic number, because the mean of its divisors is an integer number (16617920969520).

Almost surely, 2^{66471667566373} is an apocalyptic number.

It is an amenable number.

66471667566373 is a deficient number, since it is larger than the sum of its proper divisors (16311707).

66471667566373 is an equidigital number, since it uses as much as digits as its factorization.

66471667566373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16311706.

The product of its digits is 2880541440, while the sum is 73.

The spelling of 66471667566373 in words is "sixty-six trillion, four hundred seventy-one billion, six hundred sixty-seven million, five hundred sixty-six thousand, three hundred seventy-three".