155144441550 has 96 divisors (see below), whose sum is σ = 439858847232. Its totient is φ = 35450686080.

The previous prime is 155144441531. The next prime is 155144441603. The reversal of 155144441550 is 55144441551.

It is a happy number.

155144441550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155144441550² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155144441499 and 155144441508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3682404 + ... + 3724296.

It is an arithmetic number, because the mean of its divisors is an integer number (4581862992).

Almost surely, 2^155144441550 is an apocalyptic number.

155144441550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155144441550 is an abundant number, since it is smaller than the sum of its proper divisors (284714405682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155144441550 is a wasteful number, since it uses less digits than its factorization.

155144441550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45442 (or 45437 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 39.

Subtracting from 155144441550 its reverse (55144441551), we obtain a palindrome (99999999999).

The spelling of 155144441550 in words is "one hundred fifty-five billion, one hundred forty-four million, four hundred forty-one thousand, five hundred fifty".