32728273009 has 2 divisors, whose sum is σ = 32728273010. Its totient is φ = 32728273008.

The previous prime is 32728272991. The next prime is 32728273021. The reversal of 32728273009 is 90037282723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30242253409 + 2486019600 = 173903^2 + 49860^2 .

It is a cyclic number.

It is not a de Polignac number, because 32728273009 - 2²¹ = 32726175857 is a prime.

It is a super-2 number, since 2×32728273009² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32728273049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16364136504 + 16364136505.

It is an arithmetic number, because the mean of its divisors is an integer number (16364136505).

Almost surely, 2^32728273009 is an apocalyptic number.

It is an amenable number.

32728273009 is a deficient number, since it is larger than the sum of its proper divisors (1).

32728273009 is an equidigital number, since it uses as much as digits as its factorization.

32728273009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 32728273009 in words is "thirty-two billion, seven hundred twenty-eight million, two hundred seventy-three thousand, nine".