671366208747 has 16 divisors (see below), whose sum is σ = 966417062688. Its totient is φ = 412118131200.

The previous prime is 671366208731. The next prime is 671366208791. The reversal of 671366208747 is 747802663176.

671366208747 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 671366208747 - 2⁴ = 671366208731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671366208707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21448848 + ... + 21480125.

It is an arithmetic number, because the mean of its divisors is an integer number (60401066418).

Almost surely, 2^671366208747 is an apocalyptic number.

671366208747 is a deficient number, since it is larger than the sum of its proper divisors (295050853941).

671366208747 is a wasteful number, since it uses less digits than its factorization.

671366208747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42929390.

The product of its (nonzero) digits is 14224896, while the sum is 57.

The spelling of 671366208747 in words is "six hundred seventy-one billion, three hundred sixty-six million, two hundred eight thousand, seven hundred forty-seven".