53999356320 has 1440 divisors, whose sum is σ = 247608700416. Its totient is φ = 10973491200.

The previous prime is 53999356319. The next prime is 53999356343. The reversal of 53999356320 is 2365399935.

53999356320 is a `hidden beast` number, since 53 + 9 + 9 + 9 + 3 + 563 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 255921015 + ... + 255921225.

Almost surely, 2^53999356320 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 53999356320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123804350208).

53999356320 is an abundant number, since it is smaller than the sum of its proper divisors (193609344096).

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

53999356320 is a wasteful number, since it uses less digits than its factorization.

53999356320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 5904900, while the sum is 54.

The spelling of 53999356320 in words is "fifty-three billion, nine hundred ninety-nine million, three hundred fifty-six thousand, three hundred twenty".