275277368921 has 2 divisors, whose sum is σ = 275277368922. Its totient is φ = 275277368920.

The previous prime is 275277368897. The next prime is 275277368939. The reversal of 275277368921 is 129863772572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250389151321 + 24888217600 = 500389^2 + 157760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-275277368921 is a prime.

It is not a weakly prime, because it can be changed into another prime (275277368021) 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, 137638684460 + 137638684461.

It is an arithmetic number, because the mean of its divisors is an integer number (137638684461).

Almost surely, 2^275277368921 is an apocalyptic number.

It is an amenable number.

275277368921 is a deficient number, since it is larger than the sum of its proper divisors (1).

275277368921 is an equidigital number, since it uses as much as digits as its factorization.

275277368921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17781120, while the sum is 59.

The spelling of 275277368921 in words is "two hundred seventy-five billion, two hundred seventy-seven million, three hundred sixty-eight thousand, nine hundred twenty-one".