28642609203823 has 8 divisors (see below), whose sum is σ = 28809916658928. Its totient is φ = 28475321786304.

The previous prime is 28642609203749. The next prime is 28642609203869. The reversal of 28642609203823 is 32830290624682.

It is a happy number.

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 28642609203823 - 2³⁷ = 28505170250351 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 (28642609203883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137365 + ... + 7864702.

It is an arithmetic number, because the mean of its divisors is an integer number (3601239582366).

Almost surely, 2^{28642609203823} is an apocalyptic number.

28642609203823 is a deficient number, since it is larger than the sum of its proper divisors (167307455105).

28642609203823 is a wasteful number, since it uses less digits than its factorization.

28642609203823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10018793.

The product of its (nonzero) digits is 11943936, while the sum is 55.

The spelling of 28642609203823 in words is "twenty-eight trillion, six hundred forty-two billion, six hundred nine million, two hundred three thousand, eight hundred twenty-three".