28523138435 has 8 divisors (see below), whose sum is σ = 37339381296. Its totient is φ = 20744100640.

The previous prime is 28523138429. The next prime is 28523138491. The reversal of 28523138435 is 53483132582.

It is a happy number.

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

It is not a de Polignac number, because 28523138435 - 2⁸ = 28523138179 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259301204 + ... + 259301313.

It is an arithmetic number, because the mean of its divisors is an integer number (4667422662).

Almost surely, 2^28523138435 is an apocalyptic number.

28523138435 is a deficient number, since it is larger than the sum of its proper divisors (8816242861).

28523138435 is a wasteful number, since it uses less digits than its factorization.

28523138435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518602533.

The product of its digits is 691200, while the sum is 44.

The spelling of 28523138435 in words is "twenty-eight billion, five hundred twenty-three million, one hundred thirty-eight thousand, four hundred thirty-five".