51563128346 has 8 divisors (see below), whose sum is σ = 78612638484. Its totient is φ = 25358915520.

The previous prime is 51563128327. The next prime is 51563128367. The reversal of 51563128346 is 64382136515.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51327168025 + 235960321 = 226555^2 + 15361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51563128297 and 51563128306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211324175 + ... + 211324418.

Almost surely, 2^51563128346 is an apocalyptic number.

51563128346 is a deficient number, since it is larger than the sum of its proper divisors (27049510138).

51563128346 is a wasteful number, since it uses less digits than its factorization.

51563128346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422648656.

The product of its digits is 518400, while the sum is 44.

The spelling of 51563128346 in words is "fifty-one billion, five hundred sixty-three million, one hundred twenty-eight thousand, three hundred forty-six".