51971266080 has 72 divisors (see below), whose sum is σ = 177351950412. Its totient is φ = 13859003904.

The previous prime is 51971266063. The next prime is 51971266121. The reversal of 51971266080 is 8066217915.

51971266080 is a `hidden beast` number, since 5 + 19 + 7 + 1 + 26 + 608 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47745746064 + 4225520016 = 218508^2 + 65004^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18044139 + ... + 18047018.

Almost surely, 2^51971266080 is an apocalyptic number.

It is an amenable number.

51971266080 is an abundant number, since it is smaller than the sum of its proper divisors (125380684332).

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

51971266080 is a wasteful number, since it uses less digits than its factorization.

51971266080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36091178 (or 36091167 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 51971266080 in words is "fifty-one billion, nine hundred seventy-one million, two hundred sixty-six thousand, eighty".