1215353385867 has 32 divisors (see below), whose sum is σ = 1638920194560. Its totient is φ = 801045987840.

The previous prime is 1215353385823. The next prime is 1215353385881. The reversal of 1215353385867 is 7685833535121.

It is not a de Polignac number, because 1215353385867 - 2¹⁵ = 1215353353099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1215353381867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371552442 + ... + 371555712.

It is an arithmetic number, because the mean of its divisors is an integer number (51216256080).

Almost surely, 2^{1215353385867} is an apocalyptic number.

1215353385867 is a deficient number, since it is larger than the sum of its proper divisors (423566808693).

1215353385867 is a wasteful number, since it uses less digits than its factorization.

1215353385867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523.

The product of its digits is 18144000, while the sum is 57.

The spelling of 1215353385867 in words is "one trillion, two hundred fifteen billion, three hundred fifty-three million, three hundred eighty-five thousand, eight hundred sixty-seven".