428100968849 has 2 divisors, whose sum is σ = 428100968850. Its totient is φ = 428100968848.

The previous prime is 428100968773. The next prime is 428100968857. The reversal of 428100968849 is 948869001824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 428003808400 + 97160449 = 654220^2 + 9857^2 .

It is a cyclic number.

It is not a de Polignac number, because 428100968849 - 2¹⁶ = 428100903313 is a prime.

It is not a weakly prime, because it can be changed into another prime (428100968149) 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, 214050484424 + 214050484425.

It is an arithmetic number, because the mean of its divisors is an integer number (214050484425).

Almost surely, 2^428100968849 is an apocalyptic number.

It is an amenable number.

428100968849 is a deficient number, since it is larger than the sum of its proper divisors (1).

428100968849 is an equidigital number, since it uses as much as digits as its factorization.

428100968849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 428100968849 in words is "four hundred twenty-eight billion, one hundred million, nine hundred sixty-eight thousand, eight hundred forty-nine".