1290528844867 has 2 divisors, whose sum is σ = 1290528844868. Its totient is φ = 1290528844866.

The previous prime is 1290528844859. The next prime is 1290528844949. The reversal of 1290528844867 is 7684488250921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1290528844867 - 2³ = 1290528844859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1290528844799 and 1290528844808.

It is not a weakly prime, because it can be changed into another prime (1290528944867) 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, 645264422433 + 645264422434.

It is an arithmetic number, because the mean of its divisors is an integer number (645264422434).

Almost surely, 2^{1290528844867} is an apocalyptic number.

1290528844867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290528844867 is an equidigital number, since it uses as much as digits as its factorization.

1290528844867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61931520, while the sum is 64.

The spelling of 1290528844867 in words is "one trillion, two hundred ninety billion, five hundred twenty-eight million, eight hundred forty-four thousand, eight hundred sixty-seven".