86782815213 has 8 divisors (see below), whose sum is σ = 115985268576. Its totient is φ = 57717786000.

The previous prime is 86782815187. The next prime is 86782815289. The reversal of 86782815213 is 31251828768.

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

It is not a de Polignac number, because 86782815213 - 2²⁶ = 86715706349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86782815293) 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 7 ways as a sum of consecutive naturals, for example, 34354563 + ... + 34357088.

It is an arithmetic number, because the mean of its divisors is an integer number (14498158572).

Almost surely, 2^86782815213 is an apocalyptic number.

It is an amenable number.

86782815213 is a deficient number, since it is larger than the sum of its proper divisors (29202453363).

86782815213 is a wasteful number, since it uses less digits than its factorization.

86782815213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68712075.

The product of its digits is 1290240, while the sum is 51.

The spelling of 86782815213 in words is "eighty-six billion, seven hundred eighty-two million, eight hundred fifteen thousand, two hundred thirteen".