28669217919941 has 4 divisors (see below), whose sum is σ = 28674168576384. Its totient is φ = 28664267263500.

The previous prime is 28669217919929. The next prime is 28669217919983. The reversal of 28669217919941 is 14991971296682.

It is a happy number.

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 28669217919941 - 2⁶ = 28669217919877 is a prime.

It is a super-2 number, since 2×28669217919941² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28669217918941) 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, 2475319535 + ... + 2475331116.

It is an arithmetic number, because the mean of its divisors is an integer number (7168542144096).

Almost surely, 2^{28669217919941} is an apocalyptic number.

It is an amenable number.

28669217919941 is a deficient number, since it is larger than the sum of its proper divisors (4950656443).

28669217919941 is an equidigital number, since it uses as much as digits as its factorization.

28669217919941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950656442.

The product of its digits is 211631616, while the sum is 74.

The spelling of 28669217919941 in words is "twenty-eight trillion, six hundred sixty-nine billion, two hundred seventeen million, nine hundred nineteen thousand, nine hundred forty-one".