9639826234020 has 240 divisors, whose sum is σ = 31570501552128. Its totient is φ = 2457669392640.

The previous prime is 9639826234013. The next prime is 9639826234021. The reversal of 9639826234020 is 204326289369.

9639826234020 is a `hidden beast` number, since 9 + 6 + 3 + 9 + 8 + 2 + 623 + 4 + 0 + 2 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (9639826234021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 78594582 + ... + 78717138.

Almost surely, 2^{9639826234020} is an apocalyptic number.

9639826234020 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9639826234020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15785250776064).

9639826234020 is an abundant number, since it is smaller than the sum of its proper divisors (21930675318108).

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

9639826234020 is a wasteful number, since it uses less digits than its factorization.

9639826234020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124712 (or 124701 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 54.

The spelling of 9639826234020 in words is "nine trillion, six hundred thirty-nine billion, eight hundred twenty-six million, two hundred thirty-four thousand, twenty".