20140543273 has 2 divisors, whose sum is σ = 20140543274. Its totient is φ = 20140543272.

The previous prime is 20140543253. The next prime is 20140543307. The reversal of 20140543273 is 37234504102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17326983424 + 2813559849 = 131632^2 + 53043^2 .

It is a cyclic number.

It is not a de Polignac number, because 20140543273 - 2²⁵ = 20106988841 is a prime.

It is not a weakly prime, because it can be changed into another prime (20140543243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10070271636 + 10070271637.

It is an arithmetic number, because the mean of its divisors is an integer number (10070271637).

Almost surely, 2^20140543273 is an apocalyptic number.

It is an amenable number.

20140543273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20140543273 is an equidigital number, since it uses as much as digits as its factorization.

20140543273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 31.

The spelling of 20140543273 in words is "twenty billion, one hundred forty million, five hundred forty-three thousand, two hundred seventy-three".