7421717328873 has 16 divisors (see below), whose sum is σ = 9903039294720. Its totient is φ = 4944103807104.

The previous prime is 7421717328871. The next prime is 7421717328901. The reversal of 7421717328873 is 3788237171247.

It is a happy number.

It is not a de Polignac number, because 7421717328873 - 2¹ = 7421717328871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7421717328871) 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, 138456165 + ... + 138509757.

It is an arithmetic number, because the mean of its divisors is an integer number (618939955920).

Almost surely, 2^{7421717328873} is an apocalyptic number.

It is an amenable number.

7421717328873 is a deficient number, since it is larger than the sum of its proper divisors (2481321965847).

7421717328873 is a wasteful number, since it uses less digits than its factorization.

7421717328873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87328.

The product of its digits is 22127616, while the sum is 60.

The spelling of 7421717328873 in words is "seven trillion, four hundred twenty-one billion, seven hundred seventeen million, three hundred twenty-eight thousand, eight hundred seventy-three".