144955141921 has 4 divisors (see below), whose sum is σ = 145299453844. Its totient is φ = 144610830000.

The previous prime is 144955141913. The next prime is 144955141937. The reversal of 144955141921 is 129141559441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11017441296 + 133937700625 = 104964^2 + 365975^2 .

It is a cyclic number.

It is not a de Polignac number, because 144955141921 - 2³ = 144955141913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144955147921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172155330 + ... + 172156171.

It is an arithmetic number, because the mean of its divisors is an integer number (36324863461).

Almost surely, 2^144955141921 is an apocalyptic number.

It is an amenable number.

144955141921 is a deficient number, since it is larger than the sum of its proper divisors (344311923).

144955141921 is an equidigital number, since it uses as much as digits as its factorization.

144955141921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344311922.

The product of its digits is 259200, while the sum is 46.

The spelling of 144955141921 in words is "one hundred forty-four billion, nine hundred fifty-five million, one hundred forty-one thousand, nine hundred twenty-one".