1285440290688 has 64 divisors (see below), whose sum is σ = 3414889595520. Its totient is φ = 428425029120.

The previous prime is 1285440290671. The next prime is 1285440290731. The reversal of 1285440290688 is 8860920445821.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 2832823 + ... + 3255113.

It is an arithmetic number, because the mean of its divisors is an integer number (53357649930).

Almost surely, 2^{1285440290688} is an apocalyptic number.

It is an amenable number.

1285440290688 is an abundant number, since it is smaller than the sum of its proper divisors (2129449304832).

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

1285440290688 is an equidigital number, since it uses as much as digits as its factorization.

1285440290688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430235 (or 430223 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 57.

The spelling of 1285440290688 in words is "one trillion, two hundred eighty-five billion, four hundred forty million, two hundred ninety thousand, six hundred eighty-eight".