28653571575645 has 8 divisors (see below), whose sum is σ = 45845714521056. Its totient is φ = 15281904840336.

The previous prime is 28653571575617. The next prime is 28653571575667. The reversal of 28653571575645 is 54657517535682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28653571575645 - 2⁹ = 28653571575133 is a prime.

It is a super-2 number, since 2×28653571575645² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28653571575645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955119052507 + ... + 955119052536.

It is an arithmetic number, because the mean of its divisors is an integer number (5730714315132).

Almost surely, 2^{28653571575645} is an apocalyptic number.

It is an amenable number.

28653571575645 is a deficient number, since it is larger than the sum of its proper divisors (17192142945411).

28653571575645 is a wasteful number, since it uses less digits than its factorization.

28653571575645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910238105051.

The product of its digits is 1058400000, while the sum is 69.

The spelling of 28653571575645 in words is "twenty-eight trillion, six hundred fifty-three billion, five hundred seventy-one million, five hundred seventy-five thousand, six hundred forty-five".