28663591029 has 4 divisors (see below), whose sum is σ = 38218121376. Its totient is φ = 19109060684.

The previous prime is 28663590971. The next prime is 28663591037. The reversal of 28663591029 is 92019536682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28663591029 - 2⁸ = 28663590773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28663591049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4777265169 + ... + 4777265174.

It is an arithmetic number, because the mean of its divisors is an integer number (9554530344).

Almost surely, 2^28663591029 is an apocalyptic number.

It is an amenable number.

28663591029 is a deficient number, since it is larger than the sum of its proper divisors (9554530347).

28663591029 is an equidigital number, since it uses as much as digits as its factorization.

28663591029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9554530346.

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

The spelling of 28663591029 in words is "twenty-eight billion, six hundred sixty-three million, five hundred ninety-one thousand, twenty-nine".