428106081287 has 2 divisors, whose sum is σ = 428106081288. Its totient is φ = 428106081286.

The previous prime is 428106081257. The next prime is 428106081289. The reversal of 428106081287 is 782180601824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428106081287 - 2³⁸ = 153228174343 is a prime.

It is a super-2 number, since 2×428106081287² (a number of 24 digits) contains 22 as substring.

Together with 428106081289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428106081289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214053040643 + 214053040644.

It is an arithmetic number, because the mean of its divisors is an integer number (214053040644).

Almost surely, 2^428106081287 is an apocalyptic number.

428106081287 is a deficient number, since it is larger than the sum of its proper divisors (1).

428106081287 is an equidigital number, since it uses as much as digits as its factorization.

428106081287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 344064, while the sum is 47.

The spelling of 428106081287 in words is "four hundred twenty-eight billion, one hundred six million, eighty-one thousand, two hundred eighty-seven".