51873878972 has 12 divisors (see below), whose sum is σ = 90781379136. Its totient is φ = 25936342080.

The previous prime is 51873878971. The next prime is 51873878977. The reversal of 51873878972 is 27987837815.

It is a junction number, because it is equal to n+sod(n) for n = 51873878899 and 51873878908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51873878971) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 87893 + ... + 333875.

It is an arithmetic number, because the mean of its divisors is an integer number (7565114928).

Almost surely, 2^51873878972 is an apocalyptic number.

It is an amenable number.

51873878972 is a deficient number, since it is larger than the sum of its proper divisors (38907500164).

51873878972 is a wasteful number, since it uses less digits than its factorization.

51873878972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298708 (or 298706 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 65.

The spelling of 51873878972 in words is "fifty-one billion, eight hundred seventy-three million, eight hundred seventy-eight thousand, nine hundred seventy-two".