1081722238542 has 96 divisors (see below), whose sum is σ = 2576470740480. Its totient is φ = 325274832000.

The previous prime is 1081722238537. The next prime is 1081722238559. The reversal of 1081722238542 is 2458322271801.

1081722238542 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 7 + 222 + 385 + 42 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62769067 + ... + 62786297.

It is an arithmetic number, because the mean of its divisors is an integer number (26838236880).

Almost surely, 2^{1081722238542} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081722238542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288235370240).

1081722238542 is an abundant number, since it is smaller than the sum of its proper divisors (1494748501938).

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

1081722238542 is a wasteful number, since it uses less digits than its factorization.

1081722238542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19670 (or 19667 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 1081722238542 in words is "one trillion, eighty-one billion, seven hundred twenty-two million, two hundred thirty-eight thousand, five hundred forty-two".