220671832729 has 2 divisors, whose sum is σ = 220671832730. Its totient is φ = 220671832728.

The previous prime is 220671832723. The next prime is 220671832807. The reversal of 220671832729 is 927238176022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127309808025 + 93362024704 = 356805^2 + 305552^2 .

It is a cyclic number.

It is not a de Polignac number, because 220671832729 - 2³ = 220671832721 is a prime.

It is not a weakly prime, because it can be changed into another prime (220671832721) by changing a digit.

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 as a sum of consecutive naturals, namely, 110335916364 + 110335916365.

It is an arithmetic number, because the mean of its divisors is an integer number (110335916365).

Almost surely, 2^220671832729 is an apocalyptic number.

It is an amenable number.

220671832729 is a deficient number, since it is larger than the sum of its proper divisors (1).

220671832729 is an equidigital number, since it uses as much as digits as its factorization.

220671832729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 220671832729 in words is "two hundred twenty billion, six hundred seventy-one million, eight hundred thirty-two thousand, seven hundred twenty-nine".