144121275405 has 40 divisors (see below), whose sum is σ = 263847589632. Its totient is φ = 75229251552.

The previous prime is 144121275373. The next prime is 144121275413. The reversal of 144121275405 is 504572121441.

It is not a de Polignac number, because 144121275405 - 2⁵ = 144121275373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144121275405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3766657 + ... + 3804726.

Almost surely, 2^144121275405 is an apocalyptic number.

144121275405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144121275405 is a deficient number, since it is larger than the sum of its proper divisors (119726314227).

144121275405 is an equidigital number, since it uses as much as digits as its factorization.

144121275405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7571447 (or 7571438 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

Adding to 144121275405 its reverse (504572121441), we get a palindrome (648693396846).

The spelling of 144121275405 in words is "one hundred forty-four billion, one hundred twenty-one million, two hundred seventy-five thousand, four hundred five".