30556421125429 has 2 divisors, whose sum is σ = 30556421125430. Its totient is φ = 30556421125428.

The previous prime is 30556421125421. The next prime is 30556421125487. The reversal of 30556421125429 is 92452112465503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29715559635204 + 840861490225 = 5451198^2 + 916985^2 .

It is a cyclic number.

It is not a de Polignac number, because 30556421125429 - 2³ = 30556421125421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30556421125421) 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, 15278210562714 + 15278210562715.

It is an arithmetic number, because the mean of its divisors is an integer number (15278210562715).

Almost surely, 2^{30556421125429} is an apocalyptic number.

It is an amenable number.

30556421125429 is a deficient number, since it is larger than the sum of its proper divisors (1).

30556421125429 is an equidigital number, since it uses as much as digits as its factorization.

30556421125429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 30556421125429 in words is "thirty trillion, five hundred fifty-six billion, four hundred twenty-one million, one hundred twenty-five thousand, four hundred twenty-nine".