53603108856 has 320 divisors, whose sum is σ = 170262972000. Its totient is φ = 15606743040.

The previous prime is 53603108843. The next prime is 53603108863. The reversal of 53603108856 is 65880130635.

53603108856 is a `hidden beast` number, since 536 + 0 + 3 + 108 + 8 + 5 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 53124480 + ... + 53125488.

Almost surely, 2^53603108856 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 53603108856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85131486000).

53603108856 is an abundant number, since it is smaller than the sum of its proper divisors (116659863144).

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

53603108856 is a wasteful number, since it uses less digits than its factorization.

53603108856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1311 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 53603108856 in words is "fifty-three billion, six hundred three million, one hundred eight thousand, eight hundred fifty-six".