66186844363 has 2 divisors, whose sum is σ = 66186844364. Its totient is φ = 66186844362.

The previous prime is 66186844279. The next prime is 66186844411. The reversal of 66186844363 is 36344868166.

66186844363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66186844363 is a prime.

It is not a weakly prime, because it can be changed into another prime (66186844063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33093422181 + 33093422182.

It is an arithmetic number, because the mean of its divisors is an integer number (33093422182).

Almost surely, 2^66186844363 is an apocalyptic number.

66186844363 is a deficient number, since it is larger than the sum of its proper divisors (1).

66186844363 is an equidigital number, since it uses as much as digits as its factorization.

66186844363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11943936, while the sum is 55.

The spelling of 66186844363 in words is "sixty-six billion, one hundred eighty-six million, eight hundred forty-four thousand, three hundred sixty-three".