647216086912 has 32 divisors (see below), whose sum is σ = 1290779053200. Its totient is φ = 323255854080.

The previous prime is 647216086883. The next prime is 647216086919. The reversal of 647216086912 is 219680612746.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×647216086912³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 647216086912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647216086919) 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, 2633389 + ... + 2868652.

Almost surely, 2^647216086912 is an apocalyptic number.

It is an amenable number.

647216086912 is a deficient number, since it is larger than the sum of its proper divisors (643562966288).

647216086912 is an equidigital number, since it uses as much as digits as its factorization.

647216086912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502974 (or 5502962 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 647216086912 in words is "six hundred forty-seven billion, two hundred sixteen million, eighty-six thousand, nine hundred twelve".