155500443028 has 48 divisors (see below), whose sum is σ = 329785029504. Its totient is φ = 62629539840.

The previous prime is 155500443001. The next prime is 155500443029. The reversal of 155500443028 is 820344005551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155500443029) 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, 77643 + ... + 563053.

It is an arithmetic number, because the mean of its divisors is an integer number (6870521448).

Almost surely, 2^155500443028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155500443028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164892514752).

155500443028 is an abundant number, since it is smaller than the sum of its proper divisors (174284586476).

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

155500443028 is a wasteful number, since it uses less digits than its factorization.

155500443028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486112 (or 486110 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 155500443028 its reverse (820344005551), we get a palindrome (975844448579).

The spelling of 155500443028 in words is "one hundred fifty-five billion, five hundred million, four hundred forty-three thousand, twenty-eight".