51756394146 has 16 divisors (see below), whose sum is σ = 104537668608. Its totient is φ = 17081318000.

The previous prime is 51756394049. The next prime is 51756394169. The reversal of 51756394146 is 64149365715.

51756394146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×51756394146³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42702690 + ... + 42703901.

It is an arithmetic number, because the mean of its divisors is an integer number (6533604288).

Almost surely, 2^51756394146 is an apocalyptic number.

51756394146 is an abundant number, since it is smaller than the sum of its proper divisors (52781274462).

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

51756394146 is a wasteful number, since it uses less digits than its factorization.

51756394146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85406697.

The product of its digits is 2721600, while the sum is 51.

The spelling of 51756394146 in words is "fifty-one billion, seven hundred fifty-six million, three hundred ninety-four thousand, one hundred forty-six".