1285706895427 has 2 divisors, whose sum is σ = 1285706895428. Its totient is φ = 1285706895426.

The previous prime is 1285706895419. The next prime is 1285706895521. The reversal of 1285706895427 is 7245986075821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1285706895427 - 2³ = 1285706895419 is a prime.

It is not a weakly prime, because it can be changed into another prime (1285706895527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642853447713 + 642853447714.

It is an arithmetic number, because the mean of its divisors is an integer number (642853447714).

Almost surely, 2^{1285706895427} is an apocalyptic number.

1285706895427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285706895427 is an equidigital number, since it uses as much as digits as its factorization.

1285706895427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67737600, while the sum is 64.

The spelling of 1285706895427 in words is "one trillion, two hundred eighty-five billion, seven hundred six million, eight hundred ninety-five thousand, four hundred twenty-seven".