1215031050240 has 512 divisors, whose sum is σ = 4705081655040. Its totient is φ = 261372248064.

The previous prime is 1215031050229. The next prime is 1215031050263. The reversal of 1215031050240 is 420501305121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (512).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1215031050240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58480494 + ... + 58501266.

Almost surely, 2^{1215031050240} is an apocalyptic number.

1215031050240 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 1215031050240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2352540827520).

1215031050240 is an abundant number, since it is smaller than the sum of its proper divisors (3490050604800).

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

1215031050240 is an equidigital number, since it uses as much as digits as its factorization.

1215031050240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20835 (or 20807 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 1215031050240 its reverse (420501305121), we get a palindrome (1635532355361).

The spelling of 1215031050240 in words is "one trillion, two hundred fifteen billion, thirty-one million, fifty thousand, two hundred forty".