10161186881 has 2 divisors, whose sum is σ = 10161186882. Its totient is φ = 10161186880.

The previous prime is 10161186869. The next prime is 10161186887. The reversal of 10161186881 is 18868116101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8493281281 + 1667905600 = 92159^2 + 40840^2 .

It is an emirp because it is prime and its reverse (18868116101) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 18898119101 and 10191189881.

It is a cyclic number.

It is not a de Polignac number, because 10161186881 - 2²² = 10156992577 is a prime.

It is a super-2 number, since 2×10161186881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10161186887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080593440 + 5080593441.

It is an arithmetic number, because the mean of its divisors is an integer number (5080593441).

Almost surely, 2^10161186881 is an apocalyptic number.

It is an amenable number.

10161186881 is a deficient number, since it is larger than the sum of its proper divisors (1).

10161186881 is an equidigital number, since it uses as much as digits as its factorization.

10161186881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 41.

The spelling of 10161186881 in words is "ten billion, one hundred sixty-one million, one hundred eighty-six thousand, eight hundred eighty-one".