52453061664021 has 6 divisors (see below), whose sum is σ = 75765533514710. Its totient is φ = 34968707776008.

The previous prime is 52453061664013. The next prime is 52453061664023. The reversal of 52453061664021 is 12046616035425.

52453061664021 is a `hidden beast` number, since 5 + 2 + 4 + 5 + 3 + 0 + 616 + 6 + 4 + 0 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49083685700625 + 3369375963396 = 7005975^2 + 1835586^2 .

It is not a de Polignac number, because 52453061664021 - 2³ = 52453061664013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52453061664023) 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, 2914058981326 + ... + 2914058981343.

Almost surely, 2^{52453061664021} is an apocalyptic number.

It is an amenable number.

52453061664021 is a deficient number, since it is larger than the sum of its proper divisors (23312471850689).

52453061664021 is a wasteful number, since it uses less digits than its factorization.

52453061664021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5828117962675 (or 5828117962672 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

Adding to 52453061664021 its reverse (12046616035425), we get a palindrome (64499677699446).

The spelling of 52453061664021 in words is "fifty-two trillion, four hundred fifty-three billion, sixty-one million, six hundred sixty-four thousand, twenty-one".