28174525623121 has 4 divisors (see below), whose sum is σ = 28571349927744. Its totient is φ = 27777701318500.

The previous prime is 28174525623119. The next prime is 28174525623143. The reversal of 28174525623121 is 12132652547182.

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 28174525623121 - 2¹ = 28174525623119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28174525623151) 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, 198412152205 + ... + 198412152346.

It is an arithmetic number, because the mean of its divisors is an integer number (7142837481936).

Almost surely, 2^{28174525623121} is an apocalyptic number.

It is an amenable number.

28174525623121 is a deficient number, since it is larger than the sum of its proper divisors (396824304623).

28174525623121 is an equidigital number, since it uses as much as digits as its factorization.

28174525623121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396824304622.

The product of its digits is 1612800, while the sum is 49.

The spelling of 28174525623121 in words is "twenty-eight trillion, one hundred seventy-four billion, five hundred twenty-five million, six hundred twenty-three thousand, one hundred twenty-one".