51751750217 has 16 divisors (see below), whose sum is σ = 55143970560. Its totient is φ = 48398615808.

The previous prime is 51751750199. The next prime is 51751750223. The reversal of 51751750217 is 71205715715.

It is a cyclic number.

It is not a de Polignac number, because 51751750217 - 2⁶ = 51751750153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51751750417) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4519223 + ... + 4530659.

It is an arithmetic number, because the mean of its divisors is an integer number (3446498160).

Almost surely, 2^51751750217 is an apocalyptic number.

It is an amenable number.

51751750217 is a deficient number, since it is larger than the sum of its proper divisors (3392220343).

51751750217 is a wasteful number, since it uses less digits than its factorization.

51751750217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13120.

The product of its (nonzero) digits is 85750, while the sum is 41.

The spelling of 51751750217 in words is "fifty-one billion, seven hundred fifty-one million, seven hundred fifty thousand, two hundred seventeen".