51232054666 has 16 divisors (see below), whose sum is σ = 83578877928. Its totient is φ = 23411448000.

The previous prime is 51232054619. The next prime is 51232054703. The reversal of 51232054666 is 66645023215.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43270240225 + 7961814441 = 208015^2 + 89229^2 .

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, 9752145 + ... + 9757396.

Almost surely, 2^51232054666 is an apocalyptic number.

51232054666 is a deficient number, since it is larger than the sum of its proper divisors (32346823262).

51232054666 is a wasteful number, since it uses less digits than its factorization.

51232054666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19509657.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 51232054666 in words is "fifty-one billion, two hundred thirty-two million, fifty-four thousand, six hundred sixty-six".