51787029792 has 96 divisors (see below), whose sum is σ = 140790484800. Its totient is φ = 16647902208.

The previous prime is 51787029779. The next prime is 51787029797. The reversal of 51787029792 is 29792078715.

51787029792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (51787029797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2514834 + ... + 2535342.

It is an arithmetic number, because the mean of its divisors is an integer number (1466567550).

Almost surely, 2^51787029792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51787029792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70395242400).

51787029792 is an abundant number, since it is smaller than the sum of its proper divisors (89003455008).

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

51787029792 is a wasteful number, since it uses less digits than its factorization.

51787029792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21458 (or 21450 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 57.

The spelling of 51787029792 in words is "fifty-one billion, seven hundred eighty-seven million, twenty-nine thousand, seven hundred ninety-two".