51825016668 has 12 divisors (see below), whose sum is σ = 120925038920. Its totient is φ = 17275005552.

The previous prime is 51825016627. The next prime is 51825016697. The reversal of 51825016668 is 86661052815.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 2159375683 + ... + 2159375706.

Almost surely, 2^51825016668 is an apocalyptic number.

It is an amenable number.

51825016668 is an abundant number, since it is smaller than the sum of its proper divisors (69100022252).

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

51825016668 is a wasteful number, since it uses less digits than its factorization.

51825016668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4318751396 (or 4318751394 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 51825016668 in words is "fifty-one billion, eight hundred twenty-five million, sixteen thousand, six hundred sixty-eight".