1061855984112 has 240 divisors, whose sum is σ = 3482234872704. Its totient is φ = 275714880000.

The previous prime is 1061855984099. The next prime is 1061855984117. The reversal of 1061855984112 is 2114895581601.

It is a happy number.

It is a super-2 number, since 2×1061855984112² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061855984117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 115151662 + ... + 115160882.

Almost surely, 2^{1061855984112} is an apocalyptic number.

1061855984112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1061855984112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741117436352).

1061855984112 is an abundant number, since it is smaller than the sum of its proper divisors (2420378888592).

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

1061855984112 is a wasteful number, since it uses less digits than its factorization.

1061855984112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13708 (or 13695 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 51.

The spelling of 1061855984112 in words is "one trillion, sixty-one billion, eight hundred fifty-five million, nine hundred eighty-four thousand, one hundred twelve".