1053533505440 has 96 divisors (see below), whose sum is σ = 2681584932096. Its totient is φ = 388829721600.

The previous prime is 1053533505433. The next prime is 1053533505461. The reversal of 1053533505440 is 445053353501.

It is a super-2 number, since 2×1053533505440² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1053533505394 and 1053533505403.

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, 4782359 + ... + 4997801.

It is an arithmetic number, because the mean of its divisors is an integer number (27933176376).

Almost surely, 2^{1053533505440} is an apocalyptic number.

1053533505440 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 1053533505440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1340792466048).

1053533505440 is an abundant number, since it is smaller than the sum of its proper divisors (1628051426656).

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

1053533505440 is a wasteful number, since it uses less digits than its factorization.

1053533505440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217822 (or 217814 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 38.

Adding to 1053533505440 its reverse (445053353501), we get a palindrome (1498586858941).

The spelling of 1053533505440 in words is "one trillion, fifty-three billion, five hundred thirty-three million, five hundred five thousand, four hundred forty".