52140154440 has 256 divisors, whose sum is σ = 176849568000. Its totient is φ = 12181729280.

The previous prime is 52140154439. The next prime is 52140154459. The reversal of 52140154440 is 4445104125.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 52140154398 and 52140154407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30508306 + ... + 30510014.

It is an arithmetic number, because the mean of its divisors is an integer number (690818625).

Almost surely, 2^52140154440 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 52140154440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88424784000).

52140154440 is an abundant number, since it is smaller than the sum of its proper divisors (124709413560).

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

52140154440 is a wasteful number, since it uses less digits than its factorization.

52140154440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560 (or 2556 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 52140154440 its reverse (4445104125), we get a palindrome (56585258565).

The spelling of 52140154440 in words is "fifty-two billion, one hundred forty million, one hundred fifty-four thousand, four hundred forty".