2143608278377 has 2 divisors, whose sum is σ = 2143608278378. Its totient is φ = 2143608278376.

The previous prime is 2143608278303. The next prime is 2143608278401. The reversal of 2143608278377 is 7738728063412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2019627530496 + 123980747881 = 1421136^2 + 352109^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143608278377 - 2²⁷ = 2143474060649 is a prime.

It is a super-2 number, since 2×2143608278377² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2143608273377) 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, 1071804139188 + 1071804139189.

It is an arithmetic number, because the mean of its divisors is an integer number (1071804139189).

Almost surely, 2^{2143608278377} is an apocalyptic number.

It is an amenable number.

2143608278377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143608278377 is an equidigital number, since it uses as much as digits as its factorization.

2143608278377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18966528, while the sum is 58.

The spelling of 2143608278377 in words is "two trillion, one hundred forty-three billion, six hundred eight million, two hundred seventy-eight thousand, three hundred seventy-seven".