53071443840 has 512 divisors, whose sum is σ = 181818639360. Its totient is φ = 13138329600.

The previous prime is 53071443793. The next prime is 53071443869. The reversal of 53071443840 is 4834417035.

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 63 ways as a sum of consecutive naturals, for example, 325591599 + ... + 325591761.

It is an arithmetic number, because the mean of its divisors is an integer number (355114530).

Almost surely, 2^53071443840 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 53071443840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90909319680).

53071443840 is an abundant number, since it is smaller than the sum of its proper divisors (128747195520).

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

53071443840 is a wasteful number, since it uses less digits than its factorization.

53071443840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 53071443840 in words is "fifty-three billion, seventy-one million, four hundred forty-three thousand, eight hundred forty".