51719128130 has 8 divisors (see below), whose sum is σ = 93094430652. Its totient is φ = 20687651248.

The previous prime is 51719128121. The next prime is 51719128199. The reversal of 51719128130 is 3182191715.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50700177889 + 1018950241 = 225167^2 + 31921^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2585956397 + ... + 2585956416.

Almost surely, 2^51719128130 is an apocalyptic number.

51719128130 is a deficient number, since it is larger than the sum of its proper divisors (41375302522).

51719128130 is a wasteful number, since it uses less digits than its factorization.

51719128130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171912820.

The product of its (nonzero) digits is 15120, while the sum is 38.

The spelling of 51719128130 in words is "fifty-one billion, seven hundred nineteen million, one hundred twenty-eight thousand, one hundred thirty".