728834845643 has 16 divisors (see below), whose sum is σ = 785617004160. Its totient is φ = 673622775936.

The previous prime is 728834845637. The next prime is 728834845657. The reversal of 728834845643 is 346548438827.

It is a cyclic number.

It is not a de Polignac number, because 728834845643 - 2⁶ = 728834845579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728834845693) 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, 566180 + ... + 1333502.

It is an arithmetic number, because the mean of its divisors is an integer number (49101062760).

Almost surely, 2^728834845643 is an apocalyptic number.

728834845643 is a deficient number, since it is larger than the sum of its proper divisors (56782158517).

728834845643 is a wasteful number, since it uses less digits than its factorization.

728834845643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768346.

The product of its digits is 123863040, while the sum is 62.

The spelling of 728834845643 in words is "seven hundred twenty-eight billion, eight hundred thirty-four million, eight hundred forty-five thousand, six hundred forty-three".