28653299887 has 2 divisors, whose sum is σ = 28653299888. Its totient is φ = 28653299886.

The previous prime is 28653299863. The next prime is 28653299897. The reversal of 28653299887 is 78899235682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28653299887 - 2¹⁵ = 28653267119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28653299837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14326649943 + 14326649944.

It is an arithmetic number, because the mean of its divisors is an integer number (14326649944).

Almost surely, 2^28653299887 is an apocalyptic number.

28653299887 is a deficient number, since it is larger than the sum of its proper divisors (1).

28653299887 is an equidigital number, since it uses as much as digits as its factorization.

28653299887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104509440, while the sum is 67.

The spelling of 28653299887 in words is "twenty-eight billion, six hundred fifty-three million, two hundred ninety-nine thousand, eight hundred eighty-seven".