428245042689 has 8 divisors (see below), whose sum is σ = 634437100320. Its totient is φ = 285496695108.

The previous prime is 428245042669. The next prime is 428245042697. The reversal of 428245042689 is 986240542824.

It is not a de Polignac number, because 428245042689 - 2⁹ = 428245042177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (428245042609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7930463727 + ... + 7930463780.

It is an arithmetic number, because the mean of its divisors is an integer number (79304637540).

Almost surely, 2^428245042689 is an apocalyptic number.

It is an amenable number.

428245042689 is a deficient number, since it is larger than the sum of its proper divisors (206192057631).

428245042689 is a wasteful number, since it uses less digits than its factorization.

428245042689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15860927516 (or 15860927510 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 54.

The spelling of 428245042689 in words is "four hundred twenty-eight billion, two hundred forty-five million, forty-two thousand, six hundred eighty-nine".