53549475840 has 960 divisors, whose sum is σ = 229465716480. Its totient is φ = 11678515200.

The previous prime is 53549475827. The next prime is 53549475841. The reversal of 53549475840 is 4857494535.

It is a happy number.

53549475840 is a `hidden beast` number, since 5 + 3 + 5 + 494 + 75 + 84 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

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 (53549475841) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 133539640 + ... + 133540040.

It is an arithmetic number, because the mean of its divisors is an integer number (239026788).

Almost surely, 2^53549475840 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 53549475840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114732858240).

53549475840 is an abundant number, since it is smaller than the sum of its proper divisors (175916240640).

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

53549475840 is a wasteful number, since it uses less digits than its factorization.

53549475840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 53549475840 in words is "fifty-three billion, five hundred forty-nine million, four hundred seventy-five thousand, eight hundred forty".