53333386728 has 32 divisors (see below), whose sum is σ = 133359820800. Its totient is φ = 17774281728.

The previous prime is 53333386727. The next prime is 53333386741. The reversal of 53333386728 is 82768333335.

It is not an unprimeable number, because it can be changed into a prime (53333386727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94201 + ... + 339912.

It is an arithmetic number, because the mean of its divisors is an integer number (4167494400).

Almost surely, 2^53333386728 is an apocalyptic number.

It is an amenable number.

53333386728 is an abundant number, since it is smaller than the sum of its proper divisors (80026434072).

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

53333386728 is a wasteful number, since it uses less digits than its factorization.

53333386728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439241 (or 439237 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 51.

The spelling of 53333386728 in words is "fifty-three billion, three hundred thirty-three million, three hundred eighty-six thousand, seven hundred twenty-eight".