20727851033 has 2 divisors, whose sum is σ = 20727851034. Its totient is φ = 20727851032.

The previous prime is 20727851009. The next prime is 20727851041. The reversal of 20727851033 is 33015872702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19815629824 + 912221209 = 140768^2 + 30203^2 .

It is a cyclic number.

It is not a de Polignac number, because 20727851033 - 2¹⁰ = 20727850009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20727851003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10363925516 + 10363925517.

It is an arithmetic number, because the mean of its divisors is an integer number (10363925517).

Almost surely, 2^20727851033 is an apocalyptic number.

It is an amenable number.

20727851033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20727851033 is an equidigital number, since it uses as much as digits as its factorization.

20727851033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 20727851033 in words is "twenty billion, seven hundred twenty-seven million, eight hundred fifty-one thousand, thirty-three".