155242335405423 has 16 divisors (see below), whose sum is σ = 236567323251200. Its totient is φ = 88707065672736.

The previous prime is 155242335405379. The next prime is 155242335405461. The reversal of 155242335405423 is 324504533242551.

It is a happy number.

It is not a de Polignac number, because 155242335405423 - 2⁹ = 155242335404911 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 (155242335405023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117673123 + ... + 118985076.

It is an arithmetic number, because the mean of its divisors is an integer number (14785457703200).

Almost surely, 2^{155242335405423} is an apocalyptic number.

155242335405423 is a deficient number, since it is larger than the sum of its proper divisors (81324987845777).

155242335405423 is a wasteful number, since it uses less digits than its factorization.

155242335405423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236689446.

The product of its (nonzero) digits is 8640000, while the sum is 48.

Adding to 155242335405423 its reverse (324504533242551), we get a palindrome (479746868647974).

The spelling of 155242335405423 in words is "one hundred fifty-five trillion, two hundred forty-two billion, three hundred thirty-five million, four hundred five thousand, four hundred twenty-three".