53550859057920 has 864 divisors, whose sum is σ = 214953293528064. Its totient is φ = 12055331635200.

The previous prime is 53550859057859. The next prime is 53550859057937. The reversal of 53550859057920 is 2975095805535.

53550859057920 is a `hidden beast` number, since 5 + 3 + 5 + 5 + 0 + 8 + 59 + 0 + 579 + 2 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6246450754 + ... + 6246459326.

It is an arithmetic number, because the mean of its divisors is an integer number (248788534176).

Almost surely, 2^{53550859057920} 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 53550859057920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107476646764032).

53550859057920 is an abundant number, since it is smaller than the sum of its proper divisors (161402434470144).

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

53550859057920 is a wasteful number, since it uses less digits than its factorization.

53550859057920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769 (or 9752 counting only the distinct ones).

The product of its (nonzero) digits is 85050000, while the sum is 63.

The spelling of 53550859057920 in words is "fifty-three trillion, five hundred fifty billion, eight hundred fifty-nine million, fifty-seven thousand, nine hundred twenty".