275311585408861 has 2 divisors, whose sum is σ = 275311585408862. Its totient is φ = 275311585408860.

The previous prime is 275311585408819. The next prime is 275311585408891. The reversal of 275311585408861 is 168804585113572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256258273108761 + 19053312300100 = 16008069^2 + 4365010^2 .

It is a cyclic number.

It is not a de Polignac number, because 275311585408861 - 2³⁵ = 275277225670493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 275311585408793 and 275311585408802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275311585408891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137655792704430 + 137655792704431.

It is an arithmetic number, because the mean of its divisors is an integer number (137655792704431).

Almost surely, 2^{275311585408861} is an apocalyptic number.

It is an amenable number.

275311585408861 is a deficient number, since it is larger than the sum of its proper divisors (1).

275311585408861 is an equidigital number, since it uses as much as digits as its factorization.

275311585408861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512000, while the sum is 64.

The spelling of 275311585408861 in words is "two hundred seventy-five trillion, three hundred eleven billion, five hundred eighty-five million, four hundred eight thousand, eight hundred sixty-one".