53611668576 has 144 divisors (see below), whose sum is σ = 160250729184. Its totient is φ = 16968517632.

The previous prime is 53611668569. The next prime is 53611668577. The reversal of 53611668576 is 67586611635.

53611668576 is a `hidden beast` number, since 5 + 3 + 6 + 1 + 1 + 6 + 68 + 576 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×53611668576² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53611668577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 877950 + ... + 937026.

It is an arithmetic number, because the mean of its divisors is an integer number (1112852286).

Almost surely, 2^53611668576 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 53611668576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80125364592).

53611668576 is an abundant number, since it is smaller than the sum of its proper divisors (106639060608).

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

53611668576 is a wasteful number, since it uses less digits than its factorization.

53611668576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59253 (or 59242 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 53611668576 in words is "fifty-three billion, six hundred eleven million, six hundred sixty-eight thousand, five hundred seventy-six".