28671350523 has 4 divisors (see below), whose sum is σ = 38228467368. Its totient is φ = 19114233680.

The previous prime is 28671350507. The next prime is 28671350537. The reversal of 28671350523 is 32505317682.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28671350523 - 2⁴ = 28671350507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28671350503) 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, 4778558418 + ... + 4778558423.

It is an arithmetic number, because the mean of its divisors is an integer number (9557116842).

Almost surely, 2^28671350523 is an apocalyptic number.

28671350523 is a deficient number, since it is larger than the sum of its proper divisors (9557116845).

28671350523 is an equidigital number, since it uses as much as digits as its factorization.

28671350523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9557116844.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 28671350523 in words is "twenty-eight billion, six hundred seventy-one million, three hundred fifty thousand, five hundred twenty-three".