429568180421 has 2 divisors, whose sum is σ = 429568180422. Its totient is φ = 429568180420.

The previous prime is 429568180417. The next prime is 429568180439. The reversal of 429568180421 is 124081865924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369312659521 + 60255520900 = 607711^2 + 245470^2 .

It is a cyclic number.

It is not a de Polignac number, because 429568180421 - 2² = 429568180417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 429568180421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (429568180121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214784090210 + 214784090211.

It is an arithmetic number, because the mean of its divisors is an integer number (214784090211).

Almost surely, 2^429568180421 is an apocalyptic number.

It is an amenable number.

429568180421 is a deficient number, since it is larger than the sum of its proper divisors (1).

429568180421 is an equidigital number, since it uses as much as digits as its factorization.

429568180421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 429568180421 in words is "four hundred twenty-nine billion, five hundred sixty-eight million, one hundred eighty thousand, four hundred twenty-one".