51893940732 has 24 divisors (see below), whose sum is σ = 121546271616. Its totient is φ = 17232207408.

The previous prime is 51893940731. The next prime is 51893940797. The reversal of 51893940732 is 23704939815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51893940731) 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 7 ways as a sum of consecutive naturals, for example, 8218318 + ... + 8224629.

It is an arithmetic number, because the mean of its divisors is an integer number (5064427984).

Almost surely, 2^51893940732 is an apocalyptic number.

It is an amenable number.

51893940732 is an abundant number, since it is smaller than the sum of its proper divisors (69652330884).

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

51893940732 is a wasteful number, since it uses less digits than its factorization.

51893940732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16443217 (or 16443215 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 51893940732 in words is "fifty-one billion, eight hundred ninety-three million, nine hundred forty thousand, seven hundred thirty-two".