2728073420069 has 2 divisors, whose sum is σ = 2728073420070. Its totient is φ = 2728073420068.

The previous prime is 2728073420053. The next prime is 2728073420081. The reversal of 2728073420069 is 9600243708272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2658572643169 + 69500776900 = 1630513^2 + 263630^2 .

It is a cyclic number.

It is not a de Polignac number, because 2728073420069 - 2⁴ = 2728073420053 is a prime.

It is a super-2 number, since 2×2728073420069² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2728073419999 and 2728073420026.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2728073426069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364036710034 + 1364036710035.

It is an arithmetic number, because the mean of its divisors is an integer number (1364036710035).

Almost surely, 2^{2728073420069} is an apocalyptic number.

It is an amenable number.

2728073420069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2728073420069 is an equidigital number, since it uses as much as digits as its factorization.

2728073420069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 2728073420069 in words is "two trillion, seven hundred twenty-eight billion, seventy-three million, four hundred twenty thousand, sixty-nine".