28645246061 has 4 divisors (see below), whose sum is σ = 28810825692. Its totient is φ = 28479666432.

The previous prime is 28645246037. The next prime is 28645246067. The reversal of 28645246061 is 16064254682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25739389225 + 2905856836 = 160435^2 + 53906^2 .

It is a cyclic number.

It is not a de Polignac number, because 28645246061 - 2¹⁰ = 28645245037 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 (28645246067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82789556 + ... + 82789901.

It is an arithmetic number, because the mean of its divisors is an integer number (7202706423).

Almost surely, 2^28645246061 is an apocalyptic number.

It is an amenable number.

28645246061 is a deficient number, since it is larger than the sum of its proper divisors (165579631).

28645246061 is a wasteful number, since it uses less digits than its factorization.

28645246061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165579630.

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 28645246061 in words is "twenty-eight billion, six hundred forty-five million, two hundred forty-six thousand, sixty-one".