8275313271781 has 2 divisors, whose sum is σ = 8275313271782. Its totient is φ = 8275313271780.

The previous prime is 8275313271773. The next prime is 8275313271793. The reversal of 8275313271781 is 1871723135728.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7852044622500 + 423268649281 = 2802150^2 + 650591^2 .

It is a cyclic number.

It is not a de Polignac number, because 8275313271781 - 2³ = 8275313271773 is a prime.

It is a super-2 number, since 2×8275313271781² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8275313275781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4137656635890 + 4137656635891.

It is an arithmetic number, because the mean of its divisors is an integer number (4137656635891).

Almost surely, 2^{8275313271781} is an apocalyptic number.

It is an amenable number.

8275313271781 is a deficient number, since it is larger than the sum of its proper divisors (1).

8275313271781 is an equidigital number, since it uses as much as digits as its factorization.

8275313271781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 55.

The spelling of 8275313271781 in words is "eight trillion, two hundred seventy-five billion, three hundred thirteen million, two hundred seventy-one thousand, seven hundred eighty-one".