53663306508 has 144 divisors (see below), whose sum is σ = 157157704704. Its totient is φ = 15122764800.

The previous prime is 53663306471. The next prime is 53663306509. The reversal of 53663306508 is 80560336635.

53663306508 is a `hidden beast` number, since 5 + 3 + 6 + 633 + 0 + 6 + 5 + 0 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (53663306509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7500733 + ... + 7507883.

Almost surely, 2^53663306508 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 53663306508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78578852352).

53663306508 is an abundant number, since it is smaller than the sum of its proper divisors (103494398196).

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

53663306508 is a wasteful number, since it uses less digits than its factorization.

53663306508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7572 (or 7567 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 53663306508 in words is "fifty-three billion, six hundred sixty-three million, three hundred six thousand, five hundred eight".