140534144321440 has 144 divisors (see below), whose sum is σ = 343229252839200. Its totient is φ = 54374659084800.

The previous prime is 140534144321413. The next prime is 140534144321449. The reversal of 140534144321440 is 44123441435041.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 140534144321393 and 140534144321402.

It is not an unprimeable number, because it can be changed into a prime (140534144321449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327448111 + ... + 327877009.

It is an arithmetic number, because the mean of its divisors is an integer number (2383536478050).

Almost surely, 2^{140534144321440} is an apocalyptic number.

140534144321440 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 140534144321440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171614626419600).

140534144321440 is an abundant number, since it is smaller than the sum of its proper divisors (202695108517760).

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

140534144321440 is a wasteful number, since it uses less digits than its factorization.

140534144321440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431107 (or 431068 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 40.

Adding to 140534144321440 its reverse (44123441435041), we get a palindrome (184657585756481).

The spelling of 140534144321440 in words is "one hundred forty trillion, five hundred thirty-four billion, one hundred forty-four million, three hundred twenty-one thousand, four hundred forty".