1085729844580 has 12 divisors (see below), whose sum is σ = 2280032673660. Its totient is φ = 434291937824.

The previous prime is 1085729844547. The next prime is 1085729844587. The reversal of 1085729844580 is 854489275801.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 257844590656 + 827885253924 = 507784^2 + 909882^2 .

It is not an unprimeable number, because it can be changed into a prime (1085729844587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27143246095 + ... + 27143246134.

It is an arithmetic number, because the mean of its divisors is an integer number (190002722805).

Almost surely, 2^{1085729844580} is an apocalyptic number.

1085729844580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1085729844580 is an abundant number, since it is smaller than the sum of its proper divisors (1194302829080).

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

1085729844580 is a wasteful number, since it uses less digits than its factorization.

1085729844580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54286492238 (or 54286492236 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 61.

The spelling of 1085729844580 in words is "one trillion, eighty-five billion, seven hundred twenty-nine million, eight hundred forty-four thousand, five hundred eighty".