53330064021 has 72 divisors (see below), whose sum is σ = 85616593920. Its totient is φ = 31956567552.

The previous prime is 53330064017. The next prime is 53330064023. The reversal of 53330064021 is 12046003335.

It is a happy number.

It is not a de Polignac number, because 53330064021 - 2² = 53330064017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53330064023) 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 71 ways as a sum of consecutive naturals, for example, 25048285 + ... + 25050413.

It is an arithmetic number, because the mean of its divisors is an integer number (1189119360).

Almost surely, 2^53330064021 is an apocalyptic number.

It is an amenable number.

53330064021 is a deficient number, since it is larger than the sum of its proper divisors (32286529899).

53330064021 is a wasteful number, since it uses less digits than its factorization.

53330064021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587 (or 2571 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 53330064021 its reverse (12046003335), we get a palindrome (65376067356).

The spelling of 53330064021 in words is "fifty-three billion, three hundred thirty million, sixty-four thousand, twenty-one".