2163781348829 has 2 divisors, whose sum is σ = 2163781348830. Its totient is φ = 2163781348828.

The previous prime is 2163781348801. The next prime is 2163781348847. The reversal of 2163781348829 is 9288431873612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2153130696025 + 10650652804 = 1467355^2 + 103202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2163781348829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2163781347829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081890674414 + 1081890674415.

It is an arithmetic number, because the mean of its divisors is an integer number (1081890674415).

Almost surely, 2^{2163781348829} is an apocalyptic number.

It is an amenable number.

2163781348829 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163781348829 is an equidigital number, since it uses as much as digits as its factorization.

2163781348829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27869184, while the sum is 62.

The spelling of 2163781348829 in words is "two trillion, one hundred sixty-three billion, seven hundred eighty-one million, three hundred forty-eight thousand, eight hundred twenty-nine".