144437215873 has 4 divisors (see below), whose sum is σ = 150717094848. Its totient is φ = 138157336900.

The previous prime is 144437215861. The next prime is 144437215939. The reversal of 144437215873 is 378512734441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 378512734441 = 349 ⋅1084563709.

It is a cyclic number.

It is not a de Polignac number, because 144437215873 - 2²⁹ = 143900344961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144437219873) 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, 3139939453 + ... + 3139939498.

It is an arithmetic number, because the mean of its divisors is an integer number (37679273712).

Almost surely, 2^144437215873 is an apocalyptic number.

It is an amenable number.

144437215873 is a deficient number, since it is larger than the sum of its proper divisors (6279878975).

144437215873 is an equidigital number, since it uses as much as digits as its factorization.

144437215873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6279878974.

The product of its digits is 2257920, while the sum is 49.

The spelling of 144437215873 in words is "one hundred forty-four billion, four hundred thirty-seven million, two hundred fifteen thousand, eight hundred seventy-three".