428571789679 has 16 divisors (see below), whose sum is σ = 487904269824. Its totient is φ = 372637592800.

The previous prime is 428571789647. The next prime is 428571789697. The reversal of 428571789679 is 976987175824.

It is not a de Polignac number, because 428571789679 - 2⁵ = 428571789647 is a prime.

It is a super-2 number, since 2×428571789679² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428571789479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2983797 + ... + 3124129.

It is an arithmetic number, because the mean of its divisors is an integer number (30494016864).

Almost surely, 2^428571789679 is an apocalyptic number.

428571789679 is a deficient number, since it is larger than the sum of its proper divisors (59332480145).

428571789679 is a wasteful number, since it uses less digits than its factorization.

428571789679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152438.

The product of its digits is 426746880, while the sum is 73.

The spelling of 428571789679 in words is "four hundred twenty-eight billion, five hundred seventy-one million, seven hundred eighty-nine thousand, six hundred seventy-nine".