28035661085191 has 8 divisors (see below), whose sum is σ = 29781510842160. Its totient is φ = 26300555019648.

The previous prime is 28035661085189. The next prime is 28035661085207. The reversal of 28035661085191 is 19158016653082.

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

It is not a de Polignac number, because 28035661085191 - 2¹ = 28035661085189 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 (28035661085161) 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, 2685917476 + ... + 2685927913.

It is an arithmetic number, because the mean of its divisors is an integer number (3722688855270).

Almost surely, 2^{28035661085191} is an apocalyptic number.

28035661085191 is a deficient number, since it is larger than the sum of its proper divisors (1745849756969).

28035661085191 is a wasteful number, since it uses less digits than its factorization.

28035661085191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5371845713.

The product of its (nonzero) digits is 3110400, while the sum is 55.

The spelling of 28035661085191 in words is "twenty-eight trillion, thirty-five billion, six hundred sixty-one million, eighty-five thousand, one hundred ninety-one".