20870140273 has 2 divisors, whose sum is σ = 20870140274. Its totient is φ = 20870140272.

The previous prime is 20870140241. The next prime is 20870140301. The reversal of 20870140273 is 37204107802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16525616704 + 4344523569 = 128552^2 + 65913^2 .

It is a cyclic number.

It is not a de Polignac number, because 20870140273 - 2⁵ = 20870140241 is a prime.

It is not a weakly prime, because it can be changed into another prime (20870140073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10435070136 + 10435070137.

It is an arithmetic number, because the mean of its divisors is an integer number (10435070137).

Almost surely, 2^20870140273 is an apocalyptic number.

It is an amenable number.

20870140273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20870140273 is an equidigital number, since it uses as much as digits as its factorization.

20870140273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The spelling of 20870140273 in words is "twenty billion, eight hundred seventy million, one hundred forty thousand, two hundred seventy-three".