140520311640 has 96 divisors (see below), whose sum is σ = 456838040880. Its totient is φ = 37460019456.

The previous prime is 140520311621. The next prime is 140520311671. The reversal of 140520311640 is 46113025041.

It is a happy number.

140520311640 is a `hidden beast` number, since 1 + 4 + 0 + 5 + 2 + 0 + 3 + 11 + 640 = 666.

140520311640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 1086082 + ... + 1208558.

Almost surely, 2^140520311640 is an apocalyptic number.

140520311640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140520311640 is an abundant number, since it is smaller than the sum of its proper divisors (316317729240).

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

140520311640 is a wasteful number, since it uses less digits than its factorization.

140520311640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125681 (or 125674 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 140520311640 its reverse (46113025041), we get a palindrome (186633336681).

The spelling of 140520311640 in words is "one hundred forty billion, five hundred twenty million, three hundred eleven thousand, six hundred forty".