51641911768 has 16 divisors (see below), whose sum is σ = 96836050080. Its totient is φ = 25818965088.

The previous prime is 51641911747. The next prime is 51641911831. The reversal of 51641911768 is 86711914615.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135571 + ... + 348802.

It is an arithmetic number, because the mean of its divisors is an integer number (6052253130).

Almost surely, 2^51641911768 is an apocalyptic number.

It is an amenable number.

51641911768 is a deficient number, since it is larger than the sum of its proper divisors (45194138312).

51641911768 is a wasteful number, since it uses less digits than its factorization.

51641911768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497706 (or 497702 counting only the distinct ones).

The product of its digits is 362880, while the sum is 49.

The spelling of 51641911768 in words is "fifty-one billion, six hundred forty-one million, nine hundred eleven thousand, seven hundred sixty-eight".