9543536640 has 520 divisors, whose sum is σ = 37392635808. Its totient is φ = 2309160960.

The previous prime is 9543536633. The next prime is 9543536669. The reversal of 9543536640 is 466353459.

9543536640 is a `hidden beast` number, since 9 + 54 + 3 + 536 + 64 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18247419 + ... + 18247941.

Almost surely, 2^9543536640 is an apocalyptic number.

9543536640 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 9543536640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18696317904).

9543536640 is an abundant number, since it is smaller than the sum of its proper divisors (27849099168).

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

9543536640 is a wasteful number, since it uses less digits than its factorization.

9543536640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The square root of 9543536640 is about 97691.0264046806. The cubic root of 9543536640 is about 2121.1421874113.

The spelling of 9543536640 in words is "nine billion, five hundred forty-three million, five hundred thirty-six thousand, six hundred forty".