28033805732417 has 16 divisors (see below), whose sum is σ = 28235340546000. Its totient is φ = 27832568924160.

The previous prime is 28033805732399. The next prime is 28033805732447. The reversal of 28033805732417 is 71423750833082.

It is a Cunningham number, because it is equal to 5294696²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 56994877696 + 27976810854721 = 238736^2 + 5289311^2 .

It is a cyclic number.

It is not a de Polignac number, because 28033805732417 - 2⁴² = 23635759221313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28033805732447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2235366167 + ... + 2235378707.

It is an arithmetic number, because the mean of its divisors is an integer number (1764708784125).

Almost surely, 2^{28033805732417} is an apocalyptic number.

It is an amenable number.

28033805732417 is a deficient number, since it is larger than the sum of its proper divisors (201534813583).

28033805732417 is a wasteful number, since it uses less digits than its factorization.

28033805732417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23156.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 28033805732417 in words is "twenty-eight trillion, thirty-three billion, eight hundred five million, seven hundred thirty-two thousand, four hundred seventeen".