647472075708416 has 360 divisors, whose sum is σ = 1593987494413860. Its totient is φ = 262882678431744.

The previous prime is 647472075708373. The next prime is 647472075708421. The reversal of 647472075708416 is 614807570274746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1774944155 + ... + 1775308901.

Almost surely, 2^{647472075708416} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647472075708416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796993747206930).

647472075708416 is an abundant number, since it is smaller than the sum of its proper divisors (946515418705444).

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

647472075708416 is an frugal number, since it uses more digits than its factorization.

647472075708416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364835 (or 364775 counting only the distinct ones).

The product of its (nonzero) digits is 442552320, while the sum is 68.

The spelling of 647472075708416 in words is "six hundred forty-seven trillion, four hundred seventy-two billion, seventy-five million, seven hundred eight thousand, four hundred sixteen".