155504105200 has 120 divisors (see below), whose sum is σ = 381170424960. Its totient is φ = 60947884800.

The previous prime is 155504105189. The next prime is 155504105221. The reversal of 155504105200 is 2501405551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7329007 + ... + 7350193.

It is an arithmetic number, because the mean of its divisors is an integer number (3176420208).

Almost surely, 2^155504105200 is an apocalyptic number.

155504105200 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 155504105200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190585212480).

155504105200 is an abundant number, since it is smaller than the sum of its proper divisors (225666319760).

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

155504105200 is a wasteful number, since it uses less digits than its factorization.

155504105200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21575 (or 21564 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 155504105200 in words is "one hundred fifty-five billion, five hundred four million, one hundred five thousand, two hundred".