1427970790817 has 2 divisors, whose sum is σ = 1427970790818. Its totient is φ = 1427970790816.

The previous prime is 1427970790717. The next prime is 1427970790877. The reversal of 1427970790817 is 7180970797241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1073712512401 + 354258278416 = 1036201^2 + 595196^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427970790817 - 2²⁴ = 1427954013601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1427970790817.

It is not a weakly prime, because it can be changed into another prime (1427970790877) 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, 713985395408 + 713985395409.

It is an arithmetic number, because the mean of its divisors is an integer number (713985395409).

Almost surely, 2^{1427970790817} is an apocalyptic number.

It is an amenable number.

1427970790817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427970790817 is an equidigital number, since it uses as much as digits as its factorization.

1427970790817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12446784, while the sum is 62.

The spelling of 1427970790817 in words is "one trillion, four hundred twenty-seven billion, nine hundred seventy million, seven hundred ninety thousand, eight hundred seventeen".