51678463852 has 24 divisors (see below), whose sum is σ = 93291858800. Its totient is φ = 25036292160.

The previous prime is 51678463847. The next prime is 51678463861. The reversal of 51678463852 is 25836487615.

It is a happy number.

It is a super-2 number, since 2×51678463852² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51678463793 and 51678463802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1564227 + ... + 1596922.

Almost surely, 2^51678463852 is an apocalyptic number.

It is an amenable number.

51678463852 is a deficient number, since it is larger than the sum of its proper divisors (41613394948).

51678463852 is a wasteful number, since it uses less digits than its factorization.

51678463852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161281 (or 3161279 counting only the distinct ones).

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

The spelling of 51678463852 in words is "fifty-one billion, six hundred seventy-eight million, four hundred sixty-three thousand, eight hundred fifty-two".