28956653069 has 2 divisors, whose sum is σ = 28956653070. Its totient is φ = 28956653068.

The previous prime is 28956653059. The next prime is 28956653083. The reversal of 28956653069 is 96035665982.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15834950569 + 13121702500 = 125837^2 + 114550^2 .

It is a cyclic number.

It is not a de Polignac number, because 28956653069 - 2⁴ = 28956653053 is a prime.

It is a super-2 number, since 2×28956653069² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28956652999 and 28956653017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28956653009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14478326534 + 14478326535.

It is an arithmetic number, because the mean of its divisors is an integer number (14478326535).

Almost surely, 2^28956653069 is an apocalyptic number.

It is an amenable number.

28956653069 is a deficient number, since it is larger than the sum of its proper divisors (1).

28956653069 is an equidigital number, since it uses as much as digits as its factorization.

28956653069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20995200, while the sum is 59.

The spelling of 28956653069 in words is "twenty-eight billion, nine hundred fifty-six million, six hundred fifty-three thousand, sixty-nine".