727779522073 has 2 divisors, whose sum is σ = 727779522074. Its totient is φ = 727779522072.

The previous prime is 727779522047. The next prime is 727779522079. The reversal of 727779522073 is 370225977727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 644621111689 + 83158410384 = 802883^2 + 288372^2 .

It is a cyclic number.

It is not a de Polignac number, because 727779522073 - 2⁹ = 727779521561 is a prime.

It is a super-3 number, since 3×727779522073³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 727779521999 and 727779522017.

It is not a weakly prime, because it can be changed into another prime (727779522079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363889761036 + 363889761037.

It is an arithmetic number, because the mean of its divisors is an integer number (363889761037).

Almost surely, 2^727779522073 is an apocalyptic number.

It is an amenable number.

727779522073 is a deficient number, since it is larger than the sum of its proper divisors (1).

727779522073 is an equidigital number, since it uses as much as digits as its factorization.

727779522073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18151560, while the sum is 58.

The spelling of 727779522073 in words is "seven hundred twenty-seven billion, seven hundred seventy-nine million, five hundred twenty-two thousand, seventy-three".