51065267776 has 56 divisors (see below), whose sum is σ = 103899065760. Its totient is φ = 24887116800.

The previous prime is 51065267683. The next prime is 51065267789. The reversal of 51065267776 is 67776256015.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 3064395 + ... + 3081013.

It is an arithmetic number, because the mean of its divisors is an integer number (1855340460).

Almost surely, 2^51065267776 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 51065267776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51949532880).

51065267776 is an abundant number, since it is smaller than the sum of its proper divisors (52833797984).

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

51065267776 is a wasteful number, since it uses less digits than its factorization.

51065267776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17843 (or 17833 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 52.

The spelling of 51065267776 in words is "fifty-one billion, sixty-five million, two hundred sixty-seven thousand, seven hundred seventy-six".