671212442741824 has 21 divisors (see below), whose sum is σ = 1331937602351751. Its totient is φ = 335606117739840.

The previous prime is 671212442741807. The next prime is 671212442741849. The reversal of 671212442741824 is 428147244212176.

The square root of 671212442741824 is 25907768.

It is a perfect power (a square), and thus also a powerful number.

671212442741824 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×671212442741824² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 205642909 + ... + 208881379.

Almost surely, 2^{671212442741824} is an apocalyptic number.

671212442741824 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

671212442741824 is the 25907768-th square number.

It is an amenable number.

671212442741824 is a deficient number, since it is larger than the sum of its proper divisors (660725159609927).

671212442741824 is an frugal number, since it uses more digits than its factorization.

671212442741824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6476954 (or 3238473 counting only the distinct ones).

The product of its digits is 9633792, while the sum is 55.

The spelling of 671212442741824 in words is "six hundred seventy-one trillion, two hundred twelve billion, four hundred forty-two million, seven hundred forty-one thousand, eight hundred twenty-four".