155121241140443 has 8 divisors (see below), whose sum is σ = 163298487733200. Its totient is φ = 146945291622048.

The previous prime is 155121241140413. The next prime is 155121241140451. The reversal of 155121241140443 is 344041142121551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155121241140443 - 2¹⁶ = 155121241074907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155121241140397 and 155121241140406.

It is not an unprimeable number, because it can be changed into a prime (155121241140403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324023096 + ... + 324501477.

It is an arithmetic number, because the mean of its divisors is an integer number (20412310966650).

Almost surely, 2^{155121241140443} is an apocalyptic number.

155121241140443 is a deficient number, since it is larger than the sum of its proper divisors (8177246592757).

155121241140443 is a wasteful number, since it uses less digits than its factorization.

155121241140443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648537181.

The product of its (nonzero) digits is 76800, while the sum is 38.

Adding to 155121241140443 its reverse (344041142121551), we get a palindrome (499162383261994).

The spelling of 155121241140443 in words is "one hundred fifty-five trillion, one hundred twenty-one billion, two hundred forty-one million, one hundred forty thousand, four hundred forty-three".