30155555121200 has 240 divisors, whose sum is σ = 77211895265280. Its totient is φ = 11278686720000.

The previous prime is 30155555121199. The next prime is 30155555121227. The reversal of 30155555121200 is 212155555103.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 700439675 + ... + 700482725.

It is an arithmetic number, because the mean of its divisors is an integer number (321716230272).

Almost surely, 2^{30155555121200} 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 30155555121200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38605947632640).

30155555121200 is an abundant number, since it is smaller than the sum of its proper divisors (47056340144080).

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

30155555121200 is a wasteful number, since it uses less digits than its factorization.

30155555121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43756 (or 43745 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 35.

The spelling of 30155555121200 in words is "thirty trillion, one hundred fifty-five billion, five hundred fifty-five million, one hundred twenty-one thousand, two hundred".