872417723009 has 16 divisors (see below), whose sum is σ = 1025750718720. Its totient is φ = 726416759040.

The previous prime is 872417722993. The next prime is 872417723017. The reversal of 872417723009 is 900327714278.

It is a happy number.

It is not a de Polignac number, because 872417723009 - 2⁴ = 872417722993 is a prime.

It is a super-2 number, since 2×872417723009² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872417723039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6456269 + ... + 6590010.

It is an arithmetic number, because the mean of its divisors is an integer number (64109419920).

Almost surely, 2^872417723009 is an apocalyptic number.

It is an amenable number.

872417723009 is a deficient number, since it is larger than the sum of its proper divisors (153332995711).

872417723009 is a wasteful number, since it uses less digits than its factorization.

872417723009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13046560.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The spelling of 872417723009 in words is "eight hundred seventy-two billion, four hundred seventeen million, seven hundred twenty-three thousand, nine".