51805414288 has 20 divisors (see below), whose sum is σ = 105655779760. Its totient is φ = 24539406624.

The previous prime is 51805414259. The next prime is 51805414363. The reversal of 51805414288 is 88241450815.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 85205970 + ... + 85206577.

It is an arithmetic number, because the mean of its divisors is an integer number (5282788988).

Almost surely, 2^51805414288 is an apocalyptic number.

It is an amenable number.

51805414288 is an abundant number, since it is smaller than the sum of its proper divisors (53850365472).

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

51805414288 is a wasteful number, since it uses less digits than its factorization.

51805414288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170412574 (or 170412568 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 46.

The spelling of 51805414288 in words is "fifty-one billion, eight hundred five million, four hundred fourteen thousand, two hundred eighty-eight".