10601988181 has 2 divisors, whose sum is σ = 10601988182. Its totient is φ = 10601988180.

The previous prime is 10601988179. The next prime is 10601988191. The reversal of 10601988181 is 18188910601.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7610992081 + 2990996100 = 87241^2 + 54690^2 .

It is an emirp because it is prime and its reverse (18188910601) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 18188610901 and 10901688181.

It is a cyclic number.

It is not a de Polignac number, because 10601988181 - 2¹ = 10601988179 is a prime.

It is a super-2 number, since 2×10601988181² (a number of 21 digits) contains 22 as substring.

Together with 10601988179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10601988101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300994090 + 5300994091.

It is an arithmetic number, because the mean of its divisors is an integer number (5300994091).

Almost surely, 2^10601988181 is an apocalyptic number.

It is an amenable number.

10601988181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10601988181 is an equidigital number, since it uses as much as digits as its factorization.

10601988181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 43.

The spelling of 10601988181 in words is "ten billion, six hundred one million, nine hundred eighty-eight thousand, one hundred eighty-one".