721417080117 has 16 divisors (see below), whose sum is σ = 962690077440. Its totient is φ = 480544576512.

The previous prime is 721417080089. The next prime is 721417080179. The reversal of 721417080117 is 711080714127.

It is not a de Polignac number, because 721417080117 - 2⁶ = 721417080053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721417080217) 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, 18589668 + ... + 18628434.

It is an arithmetic number, because the mean of its divisors is an integer number (60168129840).

Almost surely, 2^721417080117 is an apocalyptic number.

It is an amenable number.

721417080117 is a deficient number, since it is larger than the sum of its proper divisors (241272997323).

721417080117 is a wasteful number, since it uses less digits than its factorization.

721417080117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43772.

The product of its (nonzero) digits is 21952, while the sum is 39.

The spelling of 721417080117 in words is "seven hundred twenty-one billion, four hundred seventeen million, eighty thousand, one hundred seventeen".