428307129773 has 2 divisors, whose sum is σ = 428307129774. Its totient is φ = 428307129772.

The previous prime is 428307129769. The next prime is 428307129797. The reversal of 428307129773 is 377921703824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398914770409 + 29392359364 = 631597^2 + 171442^2 .

It is a cyclic number.

It is not a de Polignac number, because 428307129773 - 2² = 428307129769 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428307129763) 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, 214153564886 + 214153564887.

It is an arithmetic number, because the mean of its divisors is an integer number (214153564887).

Almost surely, 2^428307129773 is an apocalyptic number.

It is an amenable number.

428307129773 is a deficient number, since it is larger than the sum of its proper divisors (1).

428307129773 is an equidigital number, since it uses as much as digits as its factorization.

428307129773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 428307129773 in words is "four hundred twenty-eight billion, three hundred seven million, one hundred twenty-nine thousand, seven hundred seventy-three".