20898622453 has 2 divisors, whose sum is σ = 20898622454. Its totient is φ = 20898622452.

The previous prime is 20898622363. The next prime is 20898622463. The reversal of 20898622453 is 35422689802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12881569009 + 8017053444 = 113497^2 + 89538^2 .

It is a cyclic number.

It is not a de Polignac number, because 20898622453 - 2²¹ = 20896525301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20898622397 and 20898622406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20898622463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10449311226 + 10449311227.

It is an arithmetic number, because the mean of its divisors is an integer number (10449311227).

Almost surely, 2^20898622453 is an apocalyptic number.

It is an amenable number.

20898622453 is a deficient number, since it is larger than the sum of its proper divisors (1).

20898622453 is an equidigital number, since it uses as much as digits as its factorization.

20898622453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 20898622453 in words is "twenty billion, eight hundred ninety-eight million, six hundred twenty-two thousand, four hundred fifty-three".