28534356920161 has 8 divisors (see below), whose sum is σ = 28562581756800. Its totient is φ = 28506134592240.

The previous prime is 28534356920089. The next prime is 28534356920227. The reversal of 28534356920161 is 16102965343582.

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 28534356920161 - 2⁷ = 28534356920033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28534356920761) 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, 22555450 + ... + 23786908.

It is an arithmetic number, because the mean of its divisors is an integer number (3570322719600).

Almost surely, 2^{28534356920161} is an apocalyptic number.

It is an amenable number.

28534356920161 is a deficient number, since it is larger than the sum of its proper divisors (28224836639).

28534356920161 is a wasteful number, since it uses less digits than its factorization.

28534356920161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254359.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 28534356920161 in words is "twenty-eight trillion, five hundred thirty-four billion, three hundred fifty-six million, nine hundred twenty thousand, one hundred sixty-one".