986817619213 has 2 divisors, whose sum is σ = 986817619214. Its totient is φ = 986817619212.

The previous prime is 986817619211. The next prime is 986817619223. The reversal of 986817619213 is 312916718689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 947891118409 + 38926500804 = 973597^2 + 197298^2 .

It is a cyclic number.

It is not a de Polignac number, because 986817619213 - 2¹ = 986817619211 is a prime.

Together with 986817619211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (986817619211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493408809606 + 493408809607.

It is an arithmetic number, because the mean of its divisors is an integer number (493408809607).

Almost surely, 2^986817619213 is an apocalyptic number.

It is an amenable number.

986817619213 is a deficient number, since it is larger than the sum of its proper divisors (1).

986817619213 is an equidigital number, since it uses as much as digits as its factorization.

986817619213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 61.

The spelling of 986817619213 in words is "nine hundred eighty-six billion, eight hundred seventeen million, six hundred nineteen thousand, two hundred thirteen".