20413020451 has 2 divisors, whose sum is σ = 20413020452. Its totient is φ = 20413020450.

The previous prime is 20413020409. The next prime is 20413020473. The reversal of 20413020451 is 15402031402.

It is an a-pointer prime, because the next prime (20413020473) can be obtained adding 20413020451 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20413020451 - 2⁷ = 20413020323 is a prime.

It is not a weakly prime, because it can be changed into another prime (20413000451) 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, 10206510225 + 10206510226.

It is an arithmetic number, because the mean of its divisors is an integer number (10206510226).

Almost surely, 2^20413020451 is an apocalyptic number.

20413020451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413020451 is an equidigital number, since it uses as much as digits as its factorization.

20413020451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20413020451 its reverse (15402031402), we get a palindrome (35815051853).

The spelling of 20413020451 in words is "twenty billion, four hundred thirteen million, twenty thousand, four hundred fifty-one".