1284695994487 has 2 divisors, whose sum is σ = 1284695994488. Its totient is φ = 1284695994486.

The previous prime is 1284695994469. The next prime is 1284695994539. The reversal of 1284695994487 is 7844995964821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1284695994487 - 2¹¹ = 1284695992439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284695994457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642347997243 + 642347997244.

It is an arithmetic number, because the mean of its divisors is an integer number (642347997244).

Almost surely, 2^{1284695994487} is an apocalyptic number.

1284695994487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284695994487 is an equidigital number, since it uses as much as digits as its factorization.

1284695994487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1254113280, while the sum is 76.

The spelling of 1284695994487 in words is "one trillion, two hundred eighty-four billion, six hundred ninety-five million, nine hundred ninety-four thousand, four hundred eighty-seven".