1215870279282 has 64 divisors (see below), whose sum is σ = 2709618912000. Its totient is φ = 404137931904.

The previous prime is 1215870279233. The next prime is 1215870279287. The reversal of 1215870279282 is 2829720785121.

1215870279282 is a `hidden beast` number, since 1 + 2 + 15 + 87 + 0 + 279 + 282 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1215870279287) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 121472694 + ... + 121482702.

It is an arithmetic number, because the mean of its divisors is an integer number (42337795500).

Almost surely, 2^{1215870279282} is an apocalyptic number.

1215870279282 is an abundant number, since it is smaller than the sum of its proper divisors (1493748632718).

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

1215870279282 is a wasteful number, since it uses less digits than its factorization.

1215870279282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16192 (or 16186 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 1215870279282 in words is "one trillion, two hundred fifteen billion, eight hundred seventy million, two hundred seventy-nine thousand, two hundred eighty-two".