9821156085036 has 240 divisors, whose sum is σ = 27412484853600. Its totient is φ = 3057324383232.

The previous prime is 9821156085007. The next prime is 9821156085043. The reversal of 9821156085036 is 6305806511289.

9821156085036 is a `hidden beast` number, since 9 + 8 + 21 + 1 + 5 + 608 + 5 + 0 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 132150640 + ... + 132224936.

It is an arithmetic number, because the mean of its divisors is an integer number (114218686890).

Almost surely, 2^{9821156085036} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9821156085036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13706242426800).

9821156085036 is an abundant number, since it is smaller than the sum of its proper divisors (17591328768564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9821156085036 is a wasteful number, since it uses less digits than its factorization.

9821156085036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74638 (or 74627 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 9821156085036 in words is "nine trillion, eight hundred twenty-one billion, one hundred fifty-six million, eighty-five thousand, thirty-six".