1101042323440 has 80 divisors (see below), whose sum is σ = 2576977920000. Its totient is φ = 437485660416.

The previous prime is 1101042323431. The next prime is 1101042323467. The reversal of 1101042323440 is 443232401011.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26045841 + ... + 26088079.

It is an arithmetic number, because the mean of its divisors is an integer number (32212224000).

Almost surely, 2^{1101042323440} is an apocalyptic number.

1101042323440 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 1101042323440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288488960000).

1101042323440 is an abundant number, since it is smaller than the sum of its proper divisors (1475935596560).

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

1101042323440 is a wasteful number, since it uses less digits than its factorization.

1101042323440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44414 (or 44408 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1101042323440 its reverse (443232401011), we get a palindrome (1544274724451).

The spelling of 1101042323440 in words is "one trillion, one hundred one billion, forty-two million, three hundred twenty-three thousand, four hundred forty".