18660100011101 has 2 divisors, whose sum is σ = 18660100011102. Its totient is φ = 18660100011100.

The previous prime is 18660100011079. The next prime is 18660100011103. The reversal of 18660100011101 is 10111000106681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18576737885476 + 83362125625 = 4310074^2 + 288725^2 .

It is an emirp because it is prime and its reverse (10111000106681) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 10111000109981 and 18990100011101.

It is a cyclic number.

It is not a de Polignac number, because 18660100011101 - 2³⁸ = 18385222104157 is a prime.

Together with 18660100011103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18660100011103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9330050005550 + 9330050005551.

It is an arithmetic number, because the mean of its divisors is an integer number (9330050005551).

Almost surely, 2^{18660100011101} is an apocalyptic number.

It is an amenable number.

18660100011101 is a deficient number, since it is larger than the sum of its proper divisors (1).

18660100011101 is an equidigital number, since it uses as much as digits as its factorization.

18660100011101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 26.

Adding to 18660100011101 its reverse (10111000106681), we get a palindrome (28771100117782).

The spelling of 18660100011101 in words is "eighteen trillion, six hundred sixty billion, one hundred million, eleven thousand, one hundred one".