717971440465 has 16 divisors (see below), whose sum is σ = 931655561472. Its totient is φ = 529088337664.

The previous prime is 717971440453. The next prime is 717971440577. The reversal of 717971440465 is 564044179717.

717971440465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 717971440465 - 2¹⁹ = 717970916177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89854759 + ... + 89862748.

It is an arithmetic number, because the mean of its divisors is an integer number (58228472592).

Almost surely, 2^717971440465 is an apocalyptic number.

It is an amenable number.

717971440465 is a deficient number, since it is larger than the sum of its proper divisors (213684121007).

717971440465 is a wasteful number, since it uses less digits than its factorization.

717971440465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179717576.

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 717971440465 in words is "seven hundred seventeen billion, nine hundred seventy-one million, four hundred forty thousand, four hundred sixty-five".