1215414312985 has 8 divisors (see below), whose sum is σ = 1458547967880. Its totient is φ = 972297588864.

The previous prime is 1215414312971. The next prime is 1215414313031. The reversal of 1215414312985 is 5892134145121.

It can be written as a sum of positive squares in 4 ways, for example, as 250436190096 + 964978122889 = 500436^2 + 982333^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1215414312985 - 2⁹ = 1215414312473 is a prime.

It is a super-2 number, since 2×1215414312985² (a number of 25 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 4074220 + ... + 4362349.

It is an arithmetic number, because the mean of its divisors is an integer number (182318495985).

Almost surely, 2^{1215414312985} is an apocalyptic number.

It is an amenable number.

1215414312985 is a deficient number, since it is larger than the sum of its proper divisors (243133654895).

1215414312985 is an equidigital number, since it uses as much as digits as its factorization.

1215414312985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8465387.

The product of its digits is 345600, while the sum is 46.

The spelling of 1215414312985 in words is "one trillion, two hundred fifteen billion, four hundred fourteen million, three hundred twelve thousand, nine hundred eighty-five".