155156328800 has 144 divisors (see below), whose sum is σ = 415377414144. Its totient is φ = 56124480000.

The previous prime is 155156328799. The next prime is 155156328809. The reversal of 155156328800 is 8823651551.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155156328809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1634645 + ... + 1726955.

It is an arithmetic number, because the mean of its divisors is an integer number (2884565376).

Almost surely, 2^155156328800 is an apocalyptic number.

155156328800 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 155156328800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207688707072).

155156328800 is an abundant number, since it is smaller than the sum of its proper divisors (260221085344).

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

155156328800 is a wasteful number, since it uses less digits than its factorization.

155156328800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92533 (or 92520 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 44.

The spelling of 155156328800 in words is "one hundred fifty-five billion, one hundred fifty-six million, three hundred twenty-eight thousand, eight hundred".