51784965036 has 288 divisors, whose sum is σ = 159219260928. Its totient is φ = 14411105280.

The previous prime is 51784965031. The next prime is 51784965041. The reversal of 51784965036 is 63056948715.

51784965036 is a `hidden beast` number, since 5 + 1 + 78 + 496 + 50 + 36 = 666.

It is an interprime number because it is at equal distance from previous prime (51784965031) and next prime (51784965041).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (51784965031) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 58779316 + ... + 58780196.

It is an arithmetic number, because the mean of its divisors is an integer number (552844656).

Almost surely, 2^51784965036 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 51784965036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79609630464).

51784965036 is an abundant number, since it is smaller than the sum of its proper divisors (107434295892).

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

51784965036 is a wasteful number, since it uses less digits than its factorization.

51784965036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 51784965036 in words is "fifty-one billion, seven hundred eighty-four million, nine hundred sixty-five thousand, thirty-six".