10165661000111 has 2 divisors, whose sum is σ = 10165661000112. Its totient is φ = 10165661000110.

The previous prime is 10165661000107. The next prime is 10165661000167. The reversal of 10165661000111 is 11100016656101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10165661000111 - 2² = 10165661000107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10165661000611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5082830500055 + 5082830500056.

It is an arithmetic number, because the mean of its divisors is an integer number (5082830500056).

Almost surely, 2^{10165661000111} is an apocalyptic number.

10165661000111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10165661000111 is an equidigital number, since it uses as much as digits as its factorization.

10165661000111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 29.

Adding to 10165661000111 its reverse (11100016656101), we get a palindrome (21265677656212).

The spelling of 10165661000111 in words is "ten trillion, one hundred sixty-five billion, six hundred sixty-one million, one hundred eleven", and thus it is an aban number.