20608624429 has 2 divisors, whose sum is σ = 20608624430. Its totient is φ = 20608624428.

The previous prime is 20608624423. The next prime is 20608624433. The reversal of 20608624429 is 92442680602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19056422025 + 1552202404 = 138045^2 + 39398^2 .

It is a cyclic number.

It is not a de Polignac number, because 20608624429 - 2¹⁷ = 20608493357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20608624423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10304312214 + 10304312215.

It is an arithmetic number, because the mean of its divisors is an integer number (10304312215).

Almost surely, 2^20608624429 is an apocalyptic number.

It is an amenable number.

20608624429 is a deficient number, since it is larger than the sum of its proper divisors (1).

20608624429 is an equidigital number, since it uses as much as digits as its factorization.

20608624429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 20608624429 in words is "twenty billion, six hundred eight million, six hundred twenty-four thousand, four hundred twenty-nine".