188661000611 has 2 divisors, whose sum is σ = 188661000612. Its totient is φ = 188661000610.

The previous prime is 188661000607. The next prime is 188661000641. The reversal of 188661000611 is 116000166881.

It is a weak prime.

It is an emirp because it is prime and its reverse (116000166881) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 119000199881 and 188991000911.

It is a cyclic number.

It is not a de Polignac number, because 188661000611 - 2² = 188661000607 is a prime.

It is not a weakly prime, because it can be changed into another prime (188661000641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94330500305 + 94330500306.

It is an arithmetic number, because the mean of its divisors is an integer number (94330500306).

Almost surely, 2^188661000611 is an apocalyptic number.

188661000611 is a deficient number, since it is larger than the sum of its proper divisors (1).

188661000611 is an equidigital number, since it uses as much as digits as its factorization.

188661000611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 38.

The spelling of 188661000611 in words is "one hundred eighty-eight billion, six hundred sixty-one million, six hundred eleven", and thus it is an aban number.