801720033113 has 2 divisors, whose sum is σ = 801720033114. Its totient is φ = 801720033112.

The previous prime is 801720033041. The next prime is 801720033221. The reversal of 801720033113 is 311330027108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 801503001289 + 217031824 = 895267^2 + 14732^2 .

It is a cyclic number.

It is not a de Polignac number, because 801720033113 - 2¹² = 801720029017 is a prime.

It is a super-2 number, since 2×801720033113² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (801720063113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400860016556 + 400860016557.

It is an arithmetic number, because the mean of its divisors is an integer number (400860016557).

Almost surely, 2^801720033113 is an apocalyptic number.

It is an amenable number.

801720033113 is a deficient number, since it is larger than the sum of its proper divisors (1).

801720033113 is an equidigital number, since it uses as much as digits as its factorization.

801720033113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 801720033113 in words is "eight hundred one billion, seven hundred twenty million, thirty-three thousand, one hundred thirteen".