428795908481 has 2 divisors, whose sum is σ = 428795908482. Its totient is φ = 428795908480.

The previous prime is 428795908451. The next prime is 428795908501. The reversal of 428795908481 is 184809597824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256558458256 + 172237450225 = 506516^2 + 415015^2 .

It is a cyclic number.

It is not a de Polignac number, because 428795908481 - 2¹⁴ = 428795892097 is a prime.

It is a super-2 number, since 2×428795908481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (428795908451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214397954240 + 214397954241.

It is an arithmetic number, because the mean of its divisors is an integer number (214397954241).

Almost surely, 2^428795908481 is an apocalyptic number.

It is an amenable number.

428795908481 is a deficient number, since it is larger than the sum of its proper divisors (1).

428795908481 is an equidigital number, since it uses as much as digits as its factorization.

428795908481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46448640, while the sum is 65.

The spelling of 428795908481 in words is "four hundred twenty-eight billion, seven hundred ninety-five million, nine hundred eight thousand, four hundred eighty-one".