671321018064 has 20 divisors (see below), whose sum is σ = 1734245963456. Its totient is φ = 223773672672.

The previous prime is 671321018003. The next prime is 671321018083. The reversal of 671321018064 is 460810123176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6992927224 + ... + 6992927319.

Almost surely, 2^671321018064 is an apocalyptic number.

It is an amenable number.

671321018064 is an abundant number, since it is smaller than the sum of its proper divisors (1062924945392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671321018064 is a wasteful number, since it uses less digits than its factorization.

671321018064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13985854554 (or 13985854548 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 671321018064 in words is "six hundred seventy-one billion, three hundred twenty-one million, eighteen thousand, sixty-four".