2161446627727 has 2 divisors, whose sum is σ = 2161446627728. Its totient is φ = 2161446627726.

The previous prime is 2161446627707. The next prime is 2161446627749. The reversal of 2161446627727 is 7277266441612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2161446627727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161446627707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080723313863 + 1080723313864.

It is an arithmetic number, because the mean of its divisors is an integer number (1080723313864).

Almost surely, 2^{2161446627727} is an apocalyptic number.

2161446627727 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161446627727 is an equidigital number, since it uses as much as digits as its factorization.

2161446627727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 55.

The spelling of 2161446627727 in words is "two trillion, one hundred sixty-one billion, four hundred forty-six million, six hundred twenty-seven thousand, seven hundred twenty-seven".