51432531532 has 24 divisors (see below), whose sum is σ = 90502196400. Its totient is φ = 25575137280.

The previous prime is 51432531523. The next prime is 51432531539. The reversal of 51432531532 is 23513523415.

It is not an unprimeable number, because it can be changed into a prime (51432531539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504732 + ... + 598012.

It is an arithmetic number, because the mean of its divisors is an integer number (3770924850).

Almost surely, 2^51432531532 is an apocalyptic number.

It is an amenable number.

51432531532 is a deficient number, since it is larger than the sum of its proper divisors (39069664868).

51432531532 is a wasteful number, since it uses less digits than its factorization.

51432531532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94041 (or 94039 counting only the distinct ones).

The product of its digits is 54000, while the sum is 34.

The spelling of 51432531532 in words is "fifty-one billion, four hundred thirty-two million, five hundred thirty-one thousand, five hundred thirty-two".