51150661505 has 8 divisors (see below), whose sum is σ = 61478073024. Its totient is φ = 40855676400.

The previous prime is 51150661459. The next prime is 51150661511. The reversal of 51150661505 is 50516605115.

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

It is not a de Polignac number, because 51150661505 - 2⁸ = 51150661249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8103131 + ... + 8109440.

It is an arithmetic number, because the mean of its divisors is an integer number (7684759128).

Almost surely, 2^51150661505 is an apocalyptic number.

It is an amenable number.

51150661505 is a deficient number, since it is larger than the sum of its proper divisors (10327411519).

51150661505 is a wasteful number, since it uses less digits than its factorization.

51150661505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16213207.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 51150661505 in words is "fifty-one billion, one hundred fifty million, six hundred sixty-one thousand, five hundred five".