1285286952487 has 2 divisors, whose sum is σ = 1285286952488. Its totient is φ = 1285286952486.

The previous prime is 1285286952473. The next prime is 1285286952539. The reversal of 1285286952487 is 7842596825821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1285286952487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285286982487) 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, 642643476243 + 642643476244.

It is an arithmetic number, because the mean of its divisors is an integer number (642643476244).

Almost surely, 2^{1285286952487} is an apocalyptic number.

1285286952487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285286952487 is an equidigital number, since it uses as much as digits as its factorization.

1285286952487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 154828800, while the sum is 67.

The spelling of 1285286952487 in words is "one trillion, two hundred eighty-five billion, two hundred eighty-six million, nine hundred fifty-two thousand, four hundred eighty-seven".