9986219369605 has 64 divisors (see below), whose sum is σ = 12280847866560. Its totient is φ = 7794192384000.

The previous prime is 9986219369569. The next prime is 9986219369671. The reversal of 9986219369605 is 5069639126899.

It is a Cunningham number, because it is equal to 3160098²+1.

It can be written as a sum of positive squares in 32 ways, for example, as 1783482791841 + 8202736577764 = 1335471^2 + 2864042^2 .

It is not a de Polignac number, because 9986219369605 - 2¹³ = 9986219361413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5582011051 + ... + 5582012839.

It is an arithmetic number, because the mean of its divisors is an integer number (191888247915).

Almost surely, 2^{9986219369605} is an apocalyptic number.

It is an amenable number.

9986219369605 is a deficient number, since it is larger than the sum of its proper divisors (2294628496955).

9986219369605 is a wasteful number, since it uses less digits than its factorization.

9986219369605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602.

The product of its (nonzero) digits is 340122240, while the sum is 73.

The spelling of 9986219369605 in words is "nine trillion, nine hundred eighty-six billion, two hundred nineteen million, three hundred sixty-nine thousand, six hundred five".