53688618936 has 80 divisors (see below), whose sum is σ = 150937360200. Its totient is φ = 17829619776.

The previous prime is 53688618899. The next prime is 53688618943. The reversal of 53688618936 is 63981688635.

53688618936 is a `hidden beast` number, since 5 + 3 + 6 + 8 + 8 + 618 + 9 + 3 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20311 + ... + 328313.

Almost surely, 2^53688618936 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 53688618936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75468680100).

53688618936 is an abundant number, since it is smaller than the sum of its proper divisors (97248741264).

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

53688618936 is a wasteful number, since it uses less digits than its factorization.

53688618936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308290 (or 308277 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 53688618936 in words is "fifty-three billion, six hundred eighty-eight million, six hundred eighteen thousand, nine hundred thirty-six".