140020141440 has 64 divisors (see below), whose sum is σ = 446314206960. Its totient is φ = 37338703872.

The previous prime is 140020141427. The next prime is 140020141463. The reversal of 140020141440 is 44141020041.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36461659 + ... + 36465498.

Almost surely, 2^140020141440 is an apocalyptic number.

140020141440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140020141440 is an abundant number, since it is smaller than the sum of its proper divisors (306294065520).

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

140020141440 is an equidigital number, since it uses as much as digits as its factorization.

140020141440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72927179 (or 72927167 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 140020141440 its reverse (44141020041), we get a palindrome (184161161481).

The spelling of 140020141440 in words is "one hundred forty billion, twenty million, one hundred forty-one thousand, four hundred forty".