428420988967 has 2 divisors, whose sum is σ = 428420988968. Its totient is φ = 428420988966.

The previous prime is 428420988929. The next prime is 428420989021. The reversal of 428420988967 is 769889024824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428420988967 - 2¹⁵ = 428420956199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428420988907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214210494483 + 214210494484.

It is an arithmetic number, because the mean of its divisors is an integer number (214210494484).

Almost surely, 2^428420988967 is an apocalyptic number.

428420988967 is a deficient number, since it is larger than the sum of its proper divisors (1).

428420988967 is an equidigital number, since it uses as much as digits as its factorization.

428420988967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111476736, while the sum is 67.

The spelling of 428420988967 in words is "four hundred twenty-eight billion, four hundred twenty million, nine hundred eighty-eight thousand, nine hundred sixty-seven".