144631021709 has 4 divisors (see below), whose sum is σ = 144925586400. Its totient is φ = 144336457020.

The previous prime is 144631021687. The next prime is 144631021747. The reversal of 144631021709 is 907120136441.

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.

It is a cyclic number.

It is not a de Polignac number, because 144631021709 - 2⁸ = 144631021453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144631821709) 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, 147281609 + ... + 147282590.

It is an arithmetic number, because the mean of its divisors is an integer number (36231396600).

Almost surely, 2^144631021709 is an apocalyptic number.

It is an amenable number.

144631021709 is a deficient number, since it is larger than the sum of its proper divisors (294564691).

144631021709 is an equidigital number, since it uses as much as digits as its factorization.

144631021709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294564690.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 144631021709 in words is "one hundred forty-four billion, six hundred thirty-one million, twenty-one thousand, seven hundred nine".