28461541309 has 4 divisors (see below), whose sum is σ = 28862408160. Its totient is φ = 28060674460.

The previous prime is 28461541301. The next prime is 28461541319. The reversal of 28461541309 is 90314516482.

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 28461541309 - 2³ = 28461541301 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 (28461541301) 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, 200433319 + ... + 200433460.

It is an arithmetic number, because the mean of its divisors is an integer number (7215602040).

Almost surely, 2^28461541309 is an apocalyptic number.

It is an amenable number.

28461541309 is a deficient number, since it is larger than the sum of its proper divisors (400866851).

28461541309 is an equidigital number, since it uses as much as digits as its factorization.

28461541309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400866850.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 28461541309 in words is "twenty-eight billion, four hundred sixty-one million, five hundred forty-one thousand, three hundred nine".