28550737623 has 4 divisors (see below), whose sum is σ = 38067650168. Its totient is φ = 19033825080.

The previous prime is 28550737583. The next prime is 28550737651. The reversal of 28550737623 is 32673705582.

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

It is not a de Polignac number, because 28550737623 - 2⁸ = 28550737367 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 (28550737673) 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, 4758456268 + ... + 4758456273.

It is an arithmetic number, because the mean of its divisors is an integer number (9516912542).

Almost surely, 2^28550737623 is an apocalyptic number.

28550737623 is a deficient number, since it is larger than the sum of its proper divisors (9516912545).

28550737623 is an equidigital number, since it uses as much as digits as its factorization.

28550737623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9516912544.

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 28550737623 in words is "twenty-eight billion, five hundred fifty million, seven hundred thirty-seven thousand, six hundred twenty-three".