51432530445 has 16 divisors (see below), whose sum is σ = 91435609920. Its totient is φ = 27430682832.

The previous prime is 51432530441. The next prime is 51432530447. The reversal of 51432530445 is 54403523415.

51432530445 is a `hidden beast` number, since 51 + 4 + 32 + 530 + 4 + 45 = 666.

It is not a de Polignac number, because 51432530445 - 2² = 51432530441 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51432530441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190490719 + ... + 190490988.

It is an arithmetic number, because the mean of its divisors is an integer number (5714725620).

Almost surely, 2^51432530445 is an apocalyptic number.

It is an amenable number.

51432530445 is a deficient number, since it is larger than the sum of its proper divisors (40003079475).

51432530445 is a wasteful number, since it uses less digits than its factorization.

51432530445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380981721 (or 380981715 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 51432530445 in words is "fifty-one billion, four hundred thirty-two million, five hundred thirty thousand, four hundred forty-five".