53440400088 has 96 divisors (see below), whose sum is σ = 151562211840. Its totient is φ = 16978610880.

The previous prime is 53440400033. The next prime is 53440400089. The reversal of 53440400088 is 88000404435.

53440400088 is a `hidden beast` number, since 534 + 4 + 0 + 40 + 0 + 0 + 88 = 666.

53440400088 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53440400089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411633 + ... + 525663.

It is an arithmetic number, because the mean of its divisors is an integer number (1578773040).

Almost surely, 2^53440400088 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 53440400088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75781105920).

53440400088 is an abundant number, since it is smaller than the sum of its proper divisors (98121811752).

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

53440400088 is a wasteful number, since it uses less digits than its factorization.

53440400088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114349 (or 114342 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 53440400088 in words is "fifty-three billion, four hundred forty million, four hundred thousand, eighty-eight".