215043501450 has 192 divisors, whose sum is σ = 555624437760. Its totient is φ = 55001280000.

The previous prime is 215043501377. The next prime is 215043501451. The reversal of 215043501450 is 54105340512.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (215043501451) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 91467775 + ... + 91470125.

It is an arithmetic number, because the mean of its divisors is an integer number (2893877280).

Almost surely, 2^215043501450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215043501450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277812218880).

215043501450 is an abundant number, since it is smaller than the sum of its proper divisors (340580936310).

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

215043501450 is a wasteful number, since it uses less digits than its factorization.

215043501450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653 (or 2648 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 215043501450 its reverse (54105340512), we get a palindrome (269148841962).

The spelling of 215043501450 in words is "two hundred fifteen billion, forty-three million, five hundred one thousand, four hundred fifty".