51378835712 has 144 divisors (see below), whose sum is σ = 109443936000. Its totient is φ = 24004657152.

The previous prime is 51378835663. The next prime is 51378835727. The reversal of 51378835712 is 21753887315.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214974089 + ... + 214974327.

Almost surely, 2^51378835712 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 51378835712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54721968000).

51378835712 is an abundant number, since it is smaller than the sum of its proper divisors (58065100288).

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

51378835712 is a wasteful number, since it uses less digits than its factorization.

51378835712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 682 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 50.

The spelling of 51378835712 in words is "fifty-one billion, three hundred seventy-eight million, eight hundred thirty-five thousand, seven hundred twelve".