51730258548641 has 4 divisors (see below), whose sum is σ = 51737390812692. Its totient is φ = 51723126284592.

The previous prime is 51730258548589. The next prime is 51730258548653. The reversal of 51730258548641 is 14684585203715.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39191719188241 + 12538539360400 = 6260329^2 + 3540980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51730258548641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51730258548541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3566121146 + ... + 3566135651.

It is an arithmetic number, because the mean of its divisors is an integer number (12934347703173).

Almost surely, 2^{51730258548641} is an apocalyptic number.

It is an amenable number.

51730258548641 is a deficient number, since it is larger than the sum of its proper divisors (7132264051).

51730258548641 is an equidigital number, since it uses as much as digits as its factorization.

51730258548641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7132264050.

The product of its (nonzero) digits is 32256000, while the sum is 59.

The spelling of 51730258548641 in words is "fifty-one trillion, seven hundred thirty billion, two hundred fifty-eight million, five hundred forty-eight thousand, six hundred forty-one".