1215800527200 has 288 divisors, whose sum is σ = 4531458468096. Its totient is φ = 277363906560.

The previous prime is 1215800527169. The next prime is 1215800527229. The reversal of 1215800527200 is 27250085121.

It is a super-5 number, since 5×1215800527200⁵ (a number of 62 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8717214 + ... + 8855586.

It is an arithmetic number, because the mean of its divisors is an integer number (15734230792).

Almost surely, 2^{1215800527200} is an apocalyptic number.

1215800527200 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 1215800527200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2265729234048).

1215800527200 is an abundant number, since it is smaller than the sum of its proper divisors (3315657940896).

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

1215800527200 is a wasteful number, since it uses less digits than its factorization.

1215800527200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138926 (or 138913 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The spelling of 1215800527200 in words is "one trillion, two hundred fifteen billion, eight hundred million, five hundred twenty-seven thousand, two hundred".