51442709184 has 168 divisors, whose sum is σ = 151258200912. Its totient is φ = 16706027520.

The previous prime is 51442709183. The next prime is 51442709207. The reversal of 51442709184 is 48190724415.

51442709184 is a `hidden beast` number, since 51 + 442 + 70 + 91 + 8 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (51442709183) 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 23 ways as a sum of consecutive naturals, for example, 27464472 + ... + 27466344.

It is an arithmetic number, because the mean of its divisors is an integer number (900346434).

Almost surely, 2^51442709184 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 51442709184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75629100456).

51442709184 is an abundant number, since it is smaller than the sum of its proper divisors (99815491728).

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

51442709184 is a wasteful number, since it uses less digits than its factorization.

51442709184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095 (or 3082 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 51442709184 in words is "fifty-one billion, four hundred forty-two million, seven hundred nine thousand, one hundred eighty-four".