20727851041 has 2 divisors, whose sum is σ = 20727851042. Its totient is φ = 20727851040.

The previous prime is 20727851033. The next prime is 20727851099. The reversal of 20727851041 is 14015872702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15751254016 + 4976597025 = 125504^2 + 70545^2 .

It is a cyclic number.

It is not a de Polignac number, because 20727851041 - 2³ = 20727851033 is a prime.

It is not a weakly prime, because it can be changed into another prime (20727851941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10363925520 + 10363925521.

It is an arithmetic number, because the mean of its divisors is an integer number (10363925521).

Almost surely, 2^20727851041 is an apocalyptic number.

It is an amenable number.

20727851041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20727851041 is an equidigital number, since it uses as much as digits as its factorization.

20727851041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 20727851041 in words is "twenty billion, seven hundred twenty-seven million, eight hundred fifty-one thousand, forty-one".