28601764822229 has 6 divisors (see below), whose sum is σ = 29223260845974. Its totient is φ = 27993216632360.

The previous prime is 28601764822201. The next prime is 28601764822243. The reversal of 28601764822229 is 92222846710682.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27642936099025 + 958828723204 = 5257655^2 + 979198^2 .

It is not a de Polignac number, because 28601764822229 - 2²⁸ = 28601496386773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28601764822249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6473914682 + ... + 6473919099.

It is an arithmetic number, because the mean of its divisors is an integer number (4870543474329).

Almost surely, 2^{28601764822229} is an apocalyptic number.

It is an amenable number.

28601764822229 is a deficient number, since it is larger than the sum of its proper divisors (621496023745).

28601764822229 is an equidigital number, since it uses as much as digits as its factorization.

28601764822229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12947833875 (or 12947833828 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 28601764822229 in words is "twenty-eight trillion, six hundred one billion, seven hundred sixty-four million, eight hundred twenty-two thousand, two hundred twenty-nine".