1286745918885 has 448 divisors, whose sum is σ = 3018300088320. Its totient is φ = 512148510720.

The previous prime is 1286745918863. The next prime is 1286745918911. The reversal of 1286745918885 is 5888195476821.

1286745918885 is a `hidden beast` number, since 1 + 2 + 86 + 7 + 459 + 18 + 8 + 85 = 666.

It is not a de Polignac number, because 1286745918885 - 2¹⁰ = 1286745917861 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 447 ways as a sum of consecutive naturals, for example, 354376020 + ... + 354379650.

Almost surely, 2^{1286745918885} is an apocalyptic number.

1286745918885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1286745918885 is an abundant number, since it is smaller than the sum of its proper divisors (1731554169435).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1286745918885 is a wasteful number, since it uses less digits than its factorization.

1286745918885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740 (or 3725 counting only the distinct ones).

The product of its digits is 309657600, while the sum is 72.

The spelling of 1286745918885 in words is "one trillion, two hundred eighty-six billion, seven hundred forty-five million, nine hundred eighteen thousand, eight hundred eighty-five".