53453548728 has 128 divisors (see below), whose sum is σ = 155116684800. Its totient is φ = 17023488768.

The previous prime is 53453548727. The next prime is 53453548741. The reversal of 53453548728 is 82784535435.

53453548728 is a `hidden beast` number, since 5 + 3 + 4 + 535 + 4 + 87 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53453548727) 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, 4649275 + ... + 4660757.

It is an arithmetic number, because the mean of its divisors is an integer number (1211849100).

Almost surely, 2^53453548728 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 53453548728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77558342400).

53453548728 is an abundant number, since it is smaller than the sum of its proper divisors (101663136072).

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

53453548728 is a wasteful number, since it uses less digits than its factorization.

53453548728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12458 (or 12448 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 54.

The spelling of 53453548728 in words is "fifty-three billion, four hundred fifty-three million, five hundred forty-eight thousand, seven hundred twenty-eight".