428914691587 has 2 divisors, whose sum is σ = 428914691588. Its totient is φ = 428914691586.

The previous prime is 428914691509. The next prime is 428914691629. The reversal of 428914691587 is 785196419824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428914691587 is a prime.

It is not a weakly prime, because it can be changed into another prime (428914692587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214457345793 + 214457345794.

It is an arithmetic number, because the mean of its divisors is an integer number (214457345794).

Almost surely, 2^428914691587 is an apocalyptic number.

428914691587 is a deficient number, since it is larger than the sum of its proper divisors (1).

428914691587 is an equidigital number, since it uses as much as digits as its factorization.

428914691587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 64.

The spelling of 428914691587 in words is "four hundred twenty-eight billion, nine hundred fourteen million, six hundred ninety-one thousand, five hundred eighty-seven".