52454901681 has 192 divisors, whose sum is σ = 101270740480. Its totient is φ = 25395793920.

The previous prime is 52454901671. The next prime is 52454901689. The reversal of 52454901681 is 18610945425.

52454901681 is a `hidden beast` number, since 5 + 24 + 549 + 0 + 1 + 6 + 81 = 666.

52454901681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52454901681 - 2¹¹ = 52454899633 is a prime.

It is a super-2 number, since 2×52454901681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52454901689) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 69292755 + ... + 69293511.

Almost surely, 2^52454901681 is an apocalyptic number.

It is an amenable number.

52454901681 is a deficient number, since it is larger than the sum of its proper divisors (48815838799).

52454901681 is a wasteful number, since it uses less digits than its factorization.

52454901681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 52454901681 in words is "fifty-two billion, four hundred fifty-four million, nine hundred one thousand, six hundred eighty-one".