1285013890565 has 32 divisors (see below), whose sum is σ = 1640222286336. Its totient is φ = 964290046720.

The previous prime is 1285013890549. The next prime is 1285013890631. The reversal of 1285013890565 is 5650983105821.

It is not a de Polignac number, because 1285013890565 - 2⁴ = 1285013890549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 12669755 + ... + 12770775.

It is an arithmetic number, because the mean of its divisors is an integer number (51256946448).

Almost surely, 2^{1285013890565} is an apocalyptic number.

It is an amenable number.

1285013890565 is a deficient number, since it is larger than the sum of its proper divisors (355208395771).

1285013890565 is a wasteful number, since it uses less digits than its factorization.

1285013890565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103189.

The product of its (nonzero) digits is 2592000, while the sum is 53.

The spelling of 1285013890565 in words is "one trillion, two hundred eighty-five billion, thirteen million, eight hundred ninety thousand, five hundred sixty-five".