51385466872 has 8 divisors (see below), whose sum is σ = 96347750400. Its totient is φ = 25692733432.

The previous prime is 51385466863. The next prime is 51385467013. The reversal of 51385466872 is 27866458315.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3211591672 + ... + 3211591687.

It is an arithmetic number, because the mean of its divisors is an integer number (12043468800).

Almost surely, 2^51385466872 is an apocalyptic number.

It is an amenable number.

51385466872 is a deficient number, since it is larger than the sum of its proper divisors (44962283528).

51385466872 is a wasteful number, since it uses less digits than its factorization.

51385466872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423183365 (or 6423183361 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 55.

The spelling of 51385466872 in words is "fifty-one billion, three hundred eighty-five million, four hundred sixty-six thousand, eight hundred seventy-two".