155043100800 has 1152 divisors, whose sum is σ = 704984342400. Its totient is φ = 31585075200.

The previous prime is 155043100787. The next prime is 155043100831. The reversal of 155043100800 is 8001340551.

155043100800 is a `hidden beast` number, since 1 + 550 + 4 + 3 + 100 + 8 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 65115610 + ... + 65117990.

It is an arithmetic number, because the mean of its divisors is an integer number (611965575).

Almost surely, 2^155043100800 is an apocalyptic number.

155043100800 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 155043100800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352492171200).

155043100800 is an abundant number, since it is smaller than the sum of its proper divisors (549941241600).

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

155043100800 is a wasteful number, since it uses less digits than its factorization.

155043100800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454 (or 2434 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 155043100800 in words is "one hundred fifty-five billion, forty-three million, one hundred thousand, eight hundred".