1275820565923 has 2 divisors, whose sum is σ = 1275820565924. Its totient is φ = 1275820565922.

The previous prime is 1275820565861. The next prime is 1275820565953. The reversal of 1275820565923 is 3295650285721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1275820565923 - 2²⁹ = 1275283695011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1275820565953) 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, 637910282961 + 637910282962.

It is an arithmetic number, because the mean of its divisors is an integer number (637910282962).

Almost surely, 2^{1275820565923} is an apocalyptic number.

1275820565923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275820565923 is an equidigital number, since it uses as much as digits as its factorization.

1275820565923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 55.

The spelling of 1275820565923 in words is "one trillion, two hundred seventy-five billion, eight hundred twenty million, five hundred sixty-five thousand, nine hundred twenty-three".