671005473576747 has 4 divisors (see below), whose sum is σ = 894673964769000. Its totient is φ = 447336982384496.

The previous prime is 671005473576727. The next prime is 671005473576773. The reversal of 671005473576747 is 747675374500176.

It is a happy number.

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-671005473576747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671005473576727) 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, 111834245596122 + ... + 111834245596127.

It is an arithmetic number, because the mean of its divisors is an integer number (223668491192250).

Almost surely, 2^{671005473576747} is an apocalyptic number.

671005473576747 is a deficient number, since it is larger than the sum of its proper divisors (223668491192253).

671005473576747 is a wasteful number, since it uses less digits than its factorization.

671005473576747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223668491192252.

The product of its (nonzero) digits is 726062400, while the sum is 69.

The spelling of 671005473576747 in words is "six hundred seventy-one trillion, five billion, four hundred seventy-three million, five hundred seventy-six thousand, seven hundred forty-seven".