53399243520 has 1080 divisors, whose sum is σ = 232439052384. Its totient is φ = 11649318912.

The previous prime is 53399243477. The next prime is 53399243567. The reversal of 53399243520 is 2534299335.

It is a happy number.

53399243520 is a `hidden beast` number, since 5 + 3 + 39 + 92 + 4 + 3 + 520 = 666.

53399243520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (1080).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 116847132 + ... + 116847588.

Almost surely, 2^53399243520 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 53399243520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116219526192).

53399243520 is an abundant number, since it is smaller than the sum of its proper divisors (179039808864).

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

53399243520 is a wasteful number, since it uses less digits than its factorization.

53399243520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 45.

The spelling of 53399243520 in words is "fifty-three billion, three hundred ninety-nine million, two hundred forty-three thousand, five hundred twenty".