144735406405 has 4 divisors (see below), whose sum is σ = 173682487692. Its totient is φ = 115788325120.

The previous prime is 144735406397. The next prime is 144735406433. The reversal of 144735406405 is 504604537441.

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 23460129889 + 121275276516 = 153167^2 + 348246^2 .

It is not a de Polignac number, because 144735406405 - 2³ = 144735406397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14473540636 + ... + 14473540645.

It is an arithmetic number, because the mean of its divisors is an integer number (43420621923).

Almost surely, 2^144735406405 is an apocalyptic number.

It is an amenable number.

144735406405 is a deficient number, since it is larger than the sum of its proper divisors (28947081287).

144735406405 is an equidigital number, since it uses as much as digits as its factorization.

144735406405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28947081286.

The product of its (nonzero) digits is 806400, while the sum is 43.

The spelling of 144735406405 in words is "one hundred forty-four billion, seven hundred thirty-five million, four hundred six thousand, four hundred five".