9965853836 has 24 divisors (see below), whose sum is σ = 18015548544. Its totient is φ = 4818781440.

The previous prime is 9965853827. The next prime is 9965853851. The reversal of 9965853836 is 6383585699.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152516 + ... + 207828.

It is an arithmetic number, because the mean of its divisors is an integer number (750647856).

Almost surely, 2^9965853836 is an apocalyptic number.

It is an amenable number.

9965853836 is a deficient number, since it is larger than the sum of its proper divisors (8049694708).

9965853836 is a wasteful number, since it uses less digits than its factorization.

9965853836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56801 (or 56799 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 62.

The square root of 9965853836 is about 99829.1231855715. The cubic root of 9965853836 is about 2151.9797042880.

The spelling of 9965853836 in words is "nine billion, nine hundred sixty-five million, eight hundred fifty-three thousand, eight hundred thirty-six".