51476712066 has 24 divisors (see below), whose sum is σ = 120112328700. Its totient is φ = 15838988256.

The previous prime is 51476712043. The next prime is 51476712097. The reversal of 51476712066 is 66021767415.

51476712066 is a `hidden beast` number, since 51 + 476 + 7 + 120 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49493345841 + 1983366225 = 222471^2 + 44535^2 .

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, 109992741 + ... + 109993208.

Almost surely, 2^51476712066 is an apocalyptic number.

51476712066 is an abundant number, since it is smaller than the sum of its proper divisors (68635616634).

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

51476712066 is a wasteful number, since it uses less digits than its factorization.

51476712066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219985970 (or 219985967 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 51476712066 in words is "fifty-one billion, four hundred seventy-six million, seven hundred twelve thousand, sixty-six".