53309864736 has 72 divisors (see below), whose sum is σ = 156490274304. Its totient is φ = 17196727680.

The previous prime is 53309864693. The next prime is 53309864759. The reversal of 53309864736 is 63746890335.

53309864736 is a `hidden beast` number, since 53 + 30 + 98 + 6 + 473 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2976616 + ... + 2994471.

It is an arithmetic number, because the mean of its divisors is an integer number (2173476032).

Almost surely, 2^53309864736 is an apocalyptic number.

It is an amenable number.

53309864736 is an abundant number, since it is smaller than the sum of its proper divisors (103180409568).

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

53309864736 is a wasteful number, since it uses less digits than its factorization.

53309864736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5971134 (or 5971123 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 54.

The spelling of 53309864736 in words is "fifty-three billion, three hundred nine million, eight hundred sixty-four thousand, seven hundred thirty-six".