1081105043720 has 64 divisors (see below), whose sum is σ = 2620169778240. Its totient is φ = 399090528000.

The previous prime is 1081105043647. The next prime is 1081105043791. The reversal of 1081105043720 is 273405011801.

It is a super-2 number, since 2×1081105043720² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2195015 + ... + 2642025.

It is an arithmetic number, because the mean of its divisors is an integer number (40940152785).

Almost surely, 2^{1081105043720} is an apocalyptic number.

1081105043720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081105043720 is an abundant number, since it is smaller than the sum of its proper divisors (1539064734520).

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

1081105043720 is a wasteful number, since it uses less digits than its factorization.

1081105043720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451686 (or 451682 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 1081105043720 in words is "one trillion, eighty-one billion, one hundred five million, forty-three thousand, seven hundred twenty".