428055176643 has 4 divisors (see below), whose sum is σ = 570740235528. Its totient is φ = 285370117760.

The previous prime is 428055176617. The next prime is 428055176687. The reversal of 428055176643 is 346671550824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428055176643 - 2³⁴ = 410875307459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428055136643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71342529438 + ... + 71342529443.

It is an arithmetic number, because the mean of its divisors is an integer number (142685058882).

Almost surely, 2^428055176643 is an apocalyptic number.

428055176643 is a deficient number, since it is larger than the sum of its proper divisors (142685058885).

428055176643 is a wasteful number, since it uses less digits than its factorization.

428055176643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142685058884.

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 428055176643 in words is "four hundred twenty-eight billion, fifty-five million, one hundred seventy-six thousand, six hundred forty-three".