51678286956 has 48 divisors (see below), whose sum is σ = 134000294400. Its totient is φ = 17223582096.

The previous prime is 51678286951. The next prime is 51678286963. The reversal of 51678286956 is 65968287615.

51678286956 is a `hidden beast` number, since 516 + 7 + 8 + 2 + 8 + 69 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 51678286893 and 51678286902.

It is not an unprimeable number, because it can be changed into a prime (51678286951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800865 + ... + 862983.

It is an arithmetic number, because the mean of its divisors is an integer number (2791672800).

Almost surely, 2^51678286956 is an apocalyptic number.

It is an amenable number.

51678286956 is an abundant number, since it is smaller than the sum of its proper divisors (82322007444).

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

51678286956 is a wasteful number, since it uses less digits than its factorization.

51678286956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69835 (or 69827 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 51678286956 in words is "fifty-one billion, six hundred seventy-eight million, two hundred eighty-six thousand, nine hundred fifty-six".