53003391840 has 576 divisors, whose sum is σ = 210812958720. Its totient is φ = 11877580800.

The previous prime is 53003391797. The next prime is 53003391851. The reversal of 53003391840 is 4819330035.

53003391840 is a `hidden beast` number, since 5 + 300 + 339 + 18 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 53003391795 and 53003391804.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 147641581 + ... + 147641939.

It is an arithmetic number, because the mean of its divisors is an integer number (365994720).

Almost surely, 2^53003391840 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 53003391840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105406479360).

53003391840 is an abundant number, since it is smaller than the sum of its proper divisors (157809566880).

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

53003391840 is a wasteful number, since it uses less digits than its factorization.

53003391840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 53003391840 in words is "fifty-three billion, three million, three hundred ninety-one thousand, eight hundred forty".