1285751564843 has 2 divisors, whose sum is σ = 1285751564844. Its totient is φ = 1285751564842.

The previous prime is 1285751564833. The next prime is 1285751564893. The reversal of 1285751564843 is 3484651575821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1285751564843 - 2¹⁰ = 1285751563819 is a prime.

It is a super-2 number, since 2×1285751564843² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1285751564833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642875782421 + 642875782422.

It is an arithmetic number, because the mean of its divisors is an integer number (642875782422).

Almost surely, 2^{1285751564843} is an apocalyptic number.

1285751564843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285751564843 is an equidigital number, since it uses as much as digits as its factorization.

1285751564843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256000, while the sum is 59.

The spelling of 1285751564843 in words is "one trillion, two hundred eighty-five billion, seven hundred fifty-one million, five hundred sixty-four thousand, eight hundred forty-three".