867661884513 has 12 divisors (see below), whose sum is σ = 1256197258368. Its totient is φ = 577099162680.

The previous prime is 867661884493. The next prime is 867661884611. The reversal of 867661884513 is 315488166768.

867661884513 is a `hidden beast` number, since 8 + 6 + 7 + 6 + 618 + 8 + 4 + 5 + 1 + 3 = 666.

It is not a de Polignac number, because 867661884513 - 2¹⁰ = 867661883489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (867661884013) 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 11 ways as a sum of consecutive naturals, for example, 111837045 + ... + 111844802.

It is an arithmetic number, because the mean of its divisors is an integer number (104683104864).

Almost surely, 2^867661884513 is an apocalyptic number.

It is an amenable number.

867661884513 is a deficient number, since it is larger than the sum of its proper divisors (388535373855).

867661884513 is a wasteful number, since it uses less digits than its factorization.

867661884513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223682284 (or 223682281 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 867661884513 in words is "eight hundred sixty-seven billion, six hundred sixty-one million, eight hundred eighty-four thousand, five hundred thirteen".