276206168449 has 2 divisors, whose sum is σ = 276206168450. Its totient is φ = 276206168448.

The previous prime is 276206168419. The next prime is 276206168467. The reversal of 276206168449 is 944861602672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144204746049 + 132001422400 = 379743^2 + 363320^2 .

It is a cyclic number.

It is not a de Polignac number, because 276206168449 - 2¹³ = 276206160257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 276206168449.

It is not a weakly prime, because it can be changed into another prime (276206168419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138103084224 + 138103084225.

It is an arithmetic number, because the mean of its divisors is an integer number (138103084225).

Almost surely, 2^276206168449 is an apocalyptic number.

It is an amenable number.

276206168449 is a deficient number, since it is larger than the sum of its proper divisors (1).

276206168449 is an equidigital number, since it uses as much as digits as its factorization.

276206168449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 276206168449 in words is "two hundred seventy-six billion, two hundred six million, one hundred sixty-eight thousand, four hundred forty-nine".