53516573440 has 288 divisors, whose sum is σ = 147974480640. Its totient is φ = 18339840000.

The previous prime is 53516573437. The next prime is 53516573447. The reversal of 53516573440 is 4437561535.

It is not an unprimeable number, because it can be changed into a prime (53516573447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67147122 + ... + 67147918.

It is an arithmetic number, because the mean of its divisors is an integer number (513800280).

Almost surely, 2^53516573440 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 53516573440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73987240320).

53516573440 is an abundant number, since it is smaller than the sum of its proper divisors (94457907200).

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

53516573440 is a wasteful number, since it uses less digits than its factorization.

53516573440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 53516573440 in words is "fifty-three billion, five hundred sixteen million, five hundred seventy-three thousand, four hundred forty".