53518821040 has 40 divisors (see below), whose sum is σ = 127078741440. Its totient is φ = 20952047616.

The previous prime is 53518820987. The next prime is 53518821047. The reversal of 53518821040 is 4012881535.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (53518821047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7113105 + ... + 7120624.

It is an arithmetic number, because the mean of its divisors is an integer number (3176968536).

Almost surely, 2^53518821040 is an apocalyptic number.

It is an amenable number.

53518821040 is an abundant number, since it is smaller than the sum of its proper divisors (73559920400).

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

53518821040 is a wasteful number, since it uses less digits than its factorization.

53518821040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14233789 (or 14233783 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 53518821040 in words is "fifty-three billion, five hundred eighteen million, eight hundred twenty-one thousand, forty".