728192122965 has 24 divisors (see below), whose sum is σ = 1265444439480. Its totient is φ = 387370744704.

The previous prime is 728192122963. The next prime is 728192123077. The reversal of 728192122965 is 569221291827.

It can be written as a sum of positive squares in 4 ways, for example, as 25301037969 + 702891084996 = 159063^2 + 838386^2 .

It is not a de Polignac number, because 728192122965 - 2¹ = 728192122963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728192122963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20782042 + ... + 20817051.

It is an arithmetic number, because the mean of its divisors is an integer number (52726851645).

Almost surely, 2^728192122965 is an apocalyptic number.

It is an amenable number.

728192122965 is a deficient number, since it is larger than the sum of its proper divisors (537252316515).

728192122965 is a wasteful number, since it uses less digits than its factorization.

728192122965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41599493 (or 41599490 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 728192122965 in words is "seven hundred twenty-eight billion, one hundred ninety-two million, one hundred twenty-two thousand, nine hundred sixty-five".