28209169653 has 16 divisors (see below), whose sum is σ = 43899985920. Its totient is φ = 15776556336.

The previous prime is 28209169649. The next prime is 28209169669. The reversal of 28209169653 is 35696190282.

It is not a de Polignac number, because 28209169653 - 2² = 28209169649 is a prime.

It is a super-2 number, since 2×28209169653² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28209169596 and 28209169605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28209169633) 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, 14289373 + ... + 14291346.

It is an arithmetic number, because the mean of its divisors is an integer number (2743749120).

Almost surely, 2^28209169653 is an apocalyptic number.

It is an amenable number.

28209169653 is a deficient number, since it is larger than the sum of its proper divisors (15690816267).

28209169653 is a wasteful number, since it uses less digits than its factorization.

28209169653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28580776.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 28209169653 in words is "twenty-eight billion, two hundred nine million, one hundred sixty-nine thousand, six hundred fifty-three".