9820853794072 has 8 divisors (see below), whose sum is σ = 18414100863900. Its totient is φ = 4910426897032.

The previous prime is 9820853794019. The next prime is 9820853794111. The reversal of 9820853794072 is 2704973580289.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 9820853793995 and 9820853794013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613803362122 + ... + 613803362137.

Almost surely, 2^{9820853794072} is an apocalyptic number.

It is an amenable number.

9820853794072 is a deficient number, since it is larger than the sum of its proper divisors (8593247069828).

9820853794072 is a wasteful number, since it uses less digits than its factorization.

9820853794072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227606724265 (or 1227606724261 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 9820853794072 in words is "nine trillion, eight hundred twenty billion, eight hundred fifty-three million, seven hundred ninety-four thousand, seventy-two".