51506560505 has 8 divisors (see below), whose sum is σ = 62252534400. Its totient is φ = 40908807216.

The previous prime is 51506560471. The next prime is 51506560507. The reversal of 51506560505 is 50506560515.

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

It is a cyclic number.

It is not a de Polignac number, because 51506560505 - 2²⁶ = 51439451641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51506560507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37054385 + ... + 37055774.

It is an arithmetic number, because the mean of its divisors is an integer number (7781566800).

Almost surely, 2^51506560505 is an apocalyptic number.

It is an amenable number.

51506560505 is a deficient number, since it is larger than the sum of its proper divisors (10745973895).

51506560505 is a wasteful number, since it uses less digits than its factorization.

51506560505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74110303.

The product of its (nonzero) digits is 112500, while the sum is 38.

The spelling of 51506560505 in words is "fifty-one billion, five hundred six million, five hundred sixty thousand, five hundred five".