728605018143 has 6 divisors (see below), whose sum is σ = 1052429470664. Its totient is φ = 485736678756.

The previous prime is 728605018133. The next prime is 728605018157. The reversal of 728605018143 is 341810506827.

728605018143 is a `hidden beast` number, since 7 + 2 + 8 + 60 + 501 + 81 + 4 + 3 = 666.

It is not a de Polignac number, because 728605018143 - 2⁹ = 728605017631 is a prime.

It is a super-2 number, since 2×728605018143² (a number of 25 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 (728605018103) 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 5 ways as a sum of consecutive naturals, for example, 40478056555 + ... + 40478056572.

Almost surely, 2^728605018143 is an apocalyptic number.

728605018143 is a deficient number, since it is larger than the sum of its proper divisors (323824452521).

728605018143 is a wasteful number, since it uses less digits than its factorization.

728605018143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80956113133 (or 80956113130 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 728605018143 in words is "seven hundred twenty-eight billion, six hundred five million, eighteen thousand, one hundred forty-three".