1215130051240 has 64 divisors (see below), whose sum is σ = 3124950514560. Its totient is φ = 416571966720.

The previous prime is 1215130051229. The next prime is 1215130051273. The reversal of 1215130051240 is 421500315121.

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 15 ways as a sum of consecutive naturals, for example, 2480479 + ... + 2929681.

It is an arithmetic number, because the mean of its divisors is an integer number (48827351790).

Almost surely, 2^{1215130051240} is an apocalyptic number.

1215130051240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215130051240 is an abundant number, since it is smaller than the sum of its proper divisors (1909820463320).

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

1215130051240 is a wasteful number, since it uses less digits than its factorization.

1215130051240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458882 (or 458878 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 1215130051240 its reverse (421500315121), we get a palindrome (1636630366361).

The spelling of 1215130051240 in words is "one trillion, two hundred fifteen billion, one hundred thirty million, fifty-one thousand, two hundred forty".