275646563851 has 2 divisors, whose sum is σ = 275646563852. Its totient is φ = 275646563850.

The previous prime is 275646563849. The next prime is 275646563893. The reversal of 275646563851 is 158365646572.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 275646563851 - 2¹ = 275646563849 is a prime.

Together with 275646563849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (275646563831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137823281925 + 137823281926.

It is an arithmetic number, because the mean of its divisors is an integer number (137823281926).

Almost surely, 2^275646563851 is an apocalyptic number.

275646563851 is a deficient number, since it is larger than the sum of its proper divisors (1).

275646563851 is an equidigital number, since it uses as much as digits as its factorization.

275646563851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288000, while the sum is 58.

The spelling of 275646563851 in words is "two hundred seventy-five billion, six hundred forty-six million, five hundred sixty-three thousand, eight hundred fifty-one".