53550491904 has 1080 divisors, whose sum is σ = 206386931520. Its totient is φ = 13508591616.

The previous prime is 53550491903. The next prime is 53550491971. The reversal of 53550491904 is 40919405535.

53550491904 is a `hidden beast` number, since 5 + 3 + 550 + 4 + 9 + 1 + 90 + 4 = 666.

53550491904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 53550491904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53550491903) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 907635427 + ... + 907635485.

Almost surely, 2^53550491904 is an apocalyptic number.

53550491904 is a gapful number since it is divisible by the number (54) 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 53550491904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103193465760).

53550491904 is an abundant number, since it is smaller than the sum of its proper divisors (152836439616).

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

53550491904 is a wasteful number, since it uses less digits than its factorization.

53550491904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 53550491904 in words is "fifty-three billion, five hundred fifty million, four hundred ninety-one thousand, nine hundred four".