1285799512783 has 2 divisors, whose sum is σ = 1285799512784. Its totient is φ = 1285799512782.

The previous prime is 1285799512733. The next prime is 1285799512787. The reversal of 1285799512783 is 3872159975821.

It is a strong prime.

It is an emirp because it is prime and its reverse (3872159975821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1285799512783 - 2³³ = 1277209578191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285799512787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642899756391 + 642899756392.

It is an arithmetic number, because the mean of its divisors is an integer number (642899756392).

Almost surely, 2^{1285799512783} is an apocalyptic number.

1285799512783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285799512783 is an equidigital number, since it uses as much as digits as its factorization.

1285799512783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76204800, while the sum is 67.

The spelling of 1285799512783 in words is "one trillion, two hundred eighty-five billion, seven hundred ninety-nine million, five hundred twelve thousand, seven hundred eighty-three".