28205551617113 has 8 divisors (see below), whose sum is σ = 30527848680000. Its totient is φ = 25905060160848.

The previous prime is 28205551617083. The next prime is 28205551617137. The reversal of 28205551617113 is 31171615550282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28205551617113 - 2¹⁸ = 28205551354969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28205551317113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5451398963 + ... + 5451404136.

It is an arithmetic number, because the mean of its divisors is an integer number (3815981085000).

Almost surely, 2^{28205551617113} is an apocalyptic number.

It is an amenable number.

28205551617113 is a deficient number, since it is larger than the sum of its proper divisors (2322297062887).

28205551617113 is a wasteful number, since it uses less digits than its factorization.

28205551617113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10902803311.

The product of its (nonzero) digits is 504000, while the sum is 47.

The spelling of 28205551617113 in words is "twenty-eight trillion, two hundred five billion, five hundred fifty-one million, six hundred seventeen thousand, one hundred thirteen".