144121275440 has 20 divisors (see below), whose sum is σ = 335081965584. Its totient is φ = 57648510144.

The previous prime is 144121275433. The next prime is 144121275451. The reversal of 144121275440 is 44572121441.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 144121275440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900757892 + ... + 900758051.

Almost surely, 2^144121275440 is an apocalyptic number.

144121275440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144121275440 is an abundant number, since it is smaller than the sum of its proper divisors (190960690144).

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

144121275440 is a wasteful number, since it uses less digits than its factorization.

144121275440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801515956 (or 1801515950 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

Adding to 144121275440 its reverse (44572121441), we get a palindrome (188693396881).

The spelling of 144121275440 in words is "one hundred forty-four billion, one hundred twenty-one million, two hundred seventy-five thousand, four hundred forty".