1085780855028 has 24 divisors (see below), whose sum is σ = 2575021264480. Its totient is φ = 355993722720.

The previous prime is 1085780855021. The next prime is 1085780855041. The reversal of 1085780855028 is 8205580875801.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085780855021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741652858 + ... + 741654321.

Almost surely, 2^{1085780855028} is an apocalyptic number.

It is an amenable number.

1085780855028 is an abundant number, since it is smaller than the sum of its proper divisors (1489240409452).

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

1085780855028 is a wasteful number, since it uses less digits than its factorization.

1085780855028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483307247 (or 1483307245 counting only the distinct ones).

The product of its (nonzero) digits is 7168000, while the sum is 57.

The spelling of 1085780855028 in words is "one trillion, eighty-five billion, seven hundred eighty million, eight hundred fifty-five thousand, twenty-eight".