717972207960 has 192 divisors, whose sum is σ = 2513587960800. Its totient is φ = 163583207424.

The previous prime is 717972207923. The next prime is 717972207961. The reversal of 717972207960 is 69702279717.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 717972207960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (717972207961) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1645386 + ... + 2035494.

Almost surely, 2^717972207960 is an apocalyptic number.

717972207960 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 717972207960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1256793980400).

717972207960 is an abundant number, since it is smaller than the sum of its proper divisors (1795615752840).

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

717972207960 is a wasteful number, since it uses less digits than its factorization.

717972207960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390450 (or 390439 counting only the distinct ones).

The product of its (nonzero) digits is 4667544, while the sum is 57.

The spelling of 717972207960 in words is "seven hundred seventeen billion, nine hundred seventy-two million, two hundred seven thousand, nine hundred sixty".