1215486350863 has 4 divisors (see below), whose sum is σ = 1218693439240. Its totient is φ = 1212279262488.

The previous prime is 1215486350857. The next prime is 1215486350959. The reversal of 1215486350863 is 3680536845121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1215486350863 - 2¹⁷ = 1215486219791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1215486350863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215486350363) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1603543620 + ... + 1603544377.

It is an arithmetic number, because the mean of its divisors is an integer number (304673359810).

Almost surely, 2^{1215486350863} is an apocalyptic number.

1215486350863 is a deficient number, since it is larger than the sum of its proper divisors (3207088377).

1215486350863 is an equidigital number, since it uses as much as digits as its factorization.

1215486350863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3207088376.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 1215486350863 in words is "one trillion, two hundred fifteen billion, four hundred eighty-six million, three hundred fifty thousand, eight hundred sixty-three".