51533448845436 has 72 divisors (see below), whose sum is σ = 132006743930880. Its totient is φ = 16948455492384.

The previous prime is 51533448845363. The next prime is 51533448845497. The reversal of 51533448845436 is 63454884433515.

It is a happy number.

51533448845436 is a `hidden beast` number, since 5 + 1 + 5 + 3 + 3 + 4 + 4 + 8 + 84 + 543 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2319840 + ... + 10413863.

It is an arithmetic number, because the mean of its divisors is an integer number (1833426999040).

Almost surely, 2^{51533448845436} is an apocalyptic number.

It is an amenable number.

51533448845436 is an abundant number, since it is smaller than the sum of its proper divisors (80473295085444).

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

51533448845436 is a wasteful number, since it uses less digits than its factorization.

51533448845436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12735215 (or 12735210 counting only the distinct ones).

The product of its digits is 331776000, while the sum is 63.

The spelling of 51533448845436 in words is "fifty-one trillion, five hundred thirty-three billion, four hundred forty-eight million, eight hundred forty-five thousand, four hundred thirty-six".