20296828897 has 2 divisors, whose sum is σ = 20296828898. Its totient is φ = 20296828896.

The previous prime is 20296828889. The next prime is 20296828901. The reversal of 20296828897 is 79882869202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20073505761 + 223323136 = 141681^2 + 14944^2 .

It is a cyclic number.

It is not a de Polignac number, because 20296828897 - 2³ = 20296828889 is a prime.

It is a super-2 number, since 2×20296828897² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20296828807) 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, 10148414448 + 10148414449.

It is an arithmetic number, because the mean of its divisors is an integer number (10148414449).

Almost surely, 2^20296828897 is an apocalyptic number.

It is an amenable number.

20296828897 is a deficient number, since it is larger than the sum of its proper divisors (1).

20296828897 is an equidigital number, since it uses as much as digits as its factorization.

20296828897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 20296828897 in words is "twenty billion, two hundred ninety-six million, eight hundred twenty-eight thousand, eight hundred ninety-seven".