51573268968 has 192 divisors, whose sum is σ = 148917787200. Its totient is φ = 14825041920.

The previous prime is 51573268937. The next prime is 51573268973. The reversal of 51573268968 is 86986237515.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9581638 + ... + 9587018.

It is an arithmetic number, because the mean of its divisors is an integer number (775613475).

Almost surely, 2^51573268968 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 51573268968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74458893600).

51573268968 is an abundant number, since it is smaller than the sum of its proper divisors (97344518232).

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

51573268968 is a wasteful number, since it uses less digits than its factorization.

51573268968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5572 (or 5555 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 60.

The spelling of 51573268968 in words is "fifty-one billion, five hundred seventy-three million, two hundred sixty-eight thousand, nine hundred sixty-eight".