116236716571721 has 4 divisors (see below), whose sum is σ = 121290486857472. Its totient is φ = 111182946285972.

The previous prime is 116236716571697. The next prime is 116236716571783. The reversal of 116236716571721 is 127175617632611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 116236716571721 - 2¹⁰ = 116236716570697 is a prime.

It is a super-3 number, since 3×116236716571721³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (116236716571121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2526885142841 + ... + 2526885142886.

It is an arithmetic number, because the mean of its divisors is an integer number (30322621714368).

Almost surely, 2^{116236716571721} is an apocalyptic number.

It is an amenable number.

116236716571721 is a deficient number, since it is larger than the sum of its proper divisors (5053770285751).

116236716571721 is an equidigital number, since it uses as much as digits as its factorization.

116236716571721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053770285750.

The product of its digits is 4445280, while the sum is 56.

The spelling of 116236716571721 in words is "one hundred sixteen trillion, two hundred thirty-six billion, seven hundred sixteen million, five hundred seventy-one thousand, seven hundred twenty-one".