140251135440 has 160 divisors (see below), whose sum is σ = 468511263360. Its totient is φ = 34502105088.

The previous prime is 140251135351. The next prime is 140251135499. The reversal of 140251135440 is 44531152041.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 140251135398 and 140251135407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5393991 + ... + 5419929.

It is an arithmetic number, because the mean of its divisors is an integer number (2928195396).

Almost surely, 2^140251135440 is an apocalyptic number.

140251135440 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 140251135440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234255631680).

140251135440 is an abundant number, since it is smaller than the sum of its proper divisors (328260127920).

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

140251135440 is a wasteful number, since it uses less digits than its factorization.

140251135440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27701 (or 27695 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 140251135440 its reverse (44531152041), we get a palindrome (184782287481).

The spelling of 140251135440 in words is "one hundred forty billion, two hundred fifty-one million, one hundred thirty-five thousand, four hundred forty".