53533146636 has 18 divisors (see below), whose sum is σ = 135319898532. Its totient is φ = 17844382200.

The previous prime is 53533146631. The next prime is 53533146647. The reversal of 53533146636 is 63664133535.

53533146636 is a `hidden beast` number, since 5 + 3 + 5 + 3 + 3 + 1 + 4 + 6 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 53533146591 and 53533146600.

It is not an unprimeable number, because it can be changed into a prime (53533146631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 743515890 + ... + 743515961.

Almost surely, 2^53533146636 is an apocalyptic number.

It is an amenable number.

53533146636 is an abundant number, since it is smaller than the sum of its proper divisors (81786751896).

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

53533146636 is a wasteful number, since it uses less digits than its factorization.

53533146636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487031861 (or 1487031856 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 45.

The spelling of 53533146636 in words is "fifty-three billion, five hundred thirty-three million, one hundred forty-six thousand, six hundred thirty-six".