215415200000 has 864 divisors, whose sum is σ = 724296142080. Its totient is φ = 61747200000.

The previous prime is 215415199973. The next prime is 215415200017. The reversal of 215415200000 is 2514512.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 800799866 + ... + 800800134.

It is an arithmetic number, because the mean of its divisors is an integer number (838305720).

Almost surely, 2^215415200000 is an apocalyptic number.

215415200000 is a gapful number since it is divisible by the number (20) 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 215415200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362148071040).

215415200000 is an abundant number, since it is smaller than the sum of its proper divisors (508880942080).

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

215415200000 is an equidigital number, since it uses as much as digits as its factorization.

215415200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 215415200000 its reverse (2514512), we get a palindrome (215417714512).

The spelling of 215415200000 in words is "two hundred fifteen billion, four hundred fifteen million, two hundred thousand".