1085838017780 has 12 divisors (see below), whose sum is σ = 2280259837380. Its totient is φ = 434335207104.

The previous prime is 1085838017723. The next prime is 1085838017807. The reversal of 1085838017780 is 877108385801.

It can be written as a sum of positive squares in 2 ways, for example, as 729032499556 + 356805518224 = 853834^2 + 597332^2 .

It is a super-2 number, since 2×1085838017780² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27145950425 + ... + 27145950464.

It is an arithmetic number, because the mean of its divisors is an integer number (190021653115).

Almost surely, 2^{1085838017780} is an apocalyptic number.

1085838017780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1085838017780 is an abundant number, since it is smaller than the sum of its proper divisors (1194421819600).

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

1085838017780 is a wasteful number, since it uses less digits than its factorization.

1085838017780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54291900898 (or 54291900896 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 56.

The spelling of 1085838017780 in words is "one trillion, eighty-five billion, eight hundred thirty-eight million, seventeen thousand, seven hundred eighty".