9557028673920 has 1280 divisors, whose sum is σ = 42149213568000. Its totient is φ = 2009555288064.

The previous prime is 9557028673877. The next prime is 9557028673987. The reversal of 9557028673920 is 293768207559.

9557028673920 is a `hidden beast` number, since 9 + 5 + 570 + 2 + 8 + 6 + 7 + 39 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1448250781 + ... + 1448257379.

It is an arithmetic number, because the mean of its divisors is an integer number (32929073100).

Almost surely, 2^{9557028673920} is an apocalyptic number.

9557028673920 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 9557028673920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21074606784000).

9557028673920 is an abundant number, since it is smaller than the sum of its proper divisors (32592184894080).

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

9557028673920 is a wasteful number, since it uses less digits than its factorization.

9557028673920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6957 (or 6936 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 63.

The spelling of 9557028673920 in words is "nine trillion, five hundred fifty-seven billion, twenty-eight million, six hundred seventy-three thousand, nine hundred twenty".