1285856733383 has 2 divisors, whose sum is σ = 1285856733384. Its totient is φ = 1285856733382.

The previous prime is 1285856733331. The next prime is 1285856733389. The reversal of 1285856733383 is 3833376585821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1285856733383 - 2¹⁶ = 1285856667847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285856733389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642928366691 + 642928366692.

It is an arithmetic number, because the mean of its divisors is an integer number (642928366692).

Almost surely, 2^{1285856733383} is an apocalyptic number.

1285856733383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285856733383 is an equidigital number, since it uses as much as digits as its factorization.

1285856733383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87091200, while the sum is 62.

The spelling of 1285856733383 in words is "one trillion, two hundred eighty-five billion, eight hundred fifty-six million, seven hundred thirty-three thousand, three hundred eighty-three".