1081963453440 has 352 divisors, whose sum is σ = 3646926291456. Its totient is φ = 273237606400.

The previous prime is 1081963453397. The next prime is 1081963453453. The reversal of 1081963453440 is 443543691801.

It is a super-2 number, since 2×1081963453440² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1081963453440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35666119 + ... + 35696441.

Almost surely, 2^{1081963453440} is an apocalyptic number.

1081963453440 is a gapful number since it is divisible by the number (10) 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 1081963453440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1823463145728).

1081963453440 is an abundant number, since it is smaller than the sum of its proper divisors (2564962838016).

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

1081963453440 is a wasteful number, since it uses less digits than its factorization.

1081963453440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30475 (or 30457 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 1081963453440 in words is "one trillion, eighty-one billion, nine hundred sixty-three million, four hundred fifty-three thousand, four hundred forty".