717216223680 has 1120 divisors, whose sum is σ = 2906089021440. Its totient is φ = 166309355520.

The previous prime is 717216223667. The next prime is 717216223697. The reversal of 717216223680 is 86322612717.

717216223680 is a `hidden beast` number, since 7 + 17 + 2 + 1 + 622 + 3 + 6 + 8 + 0 = 666.

717216223680 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 a super-2 number, since 2×717216223680² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1050096619 + ... + 1050097301.

Almost surely, 2^717216223680 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 717216223680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1453044510720).

717216223680 is an abundant number, since it is smaller than the sum of its proper divisors (2188872797760).

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

717216223680 is a wasteful number, since it uses less digits than its factorization.

717216223680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 717216223680 in words is "seven hundred seventeen billion, two hundred sixteen million, two hundred twenty-three thousand, six hundred eighty".