155144550000 has 480 divisors, whose sum is σ = 578748457728. Its totient is φ = 35392000000.

The previous prime is 155144549971. The next prime is 155144550007. The reversal of 155144550000 is 55441551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 155144550000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155144550007) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28047235 + ... + 28052765.

Almost surely, 2^155144550000 is an apocalyptic number.

155144550000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155144550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289374228864).

155144550000 is an abundant number, since it is smaller than the sum of its proper divisors (423603907728).

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

155144550000 is a wasteful number, since it uses less digits than its factorization.

155144550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5595 (or 5569 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

Adding to 155144550000 its reverse (55441551), we get a palindrome (155199991551).

The spelling of 155144550000 in words is "one hundred fifty-five billion, one hundred forty-four million, five hundred fifty thousand".