51606187568 has 160 divisors (see below), whose sum is σ = 113271416832. Its totient is φ = 22614681600.

The previous prime is 51606187559. The next prime is 51606187583. The reversal of 51606187568 is 86578160615.

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 31 ways as a sum of consecutive naturals, for example, 112923596 + ... + 112924052.

Almost surely, 2^51606187568 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 51606187568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56635708416).

51606187568 is an abundant number, since it is smaller than the sum of its proper divisors (61665229264).

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

51606187568 is a wasteful number, since it uses less digits than its factorization.

51606187568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 51606187568 in words is "fifty-one billion, six hundred six million, one hundred eighty-seven thousand, five hundred sixty-eight".