23772289505 has 4 divisors (see below), whose sum is σ = 28526747412. Its totient is φ = 19017831600.

The previous prime is 23772289441. The next prime is 23772289571. The reversal of 23772289505 is 50598227732.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15947648656 + 7824640849 = 126284^2 + 88457^2 .

It is not a de Polignac number, because 23772289505 - 2⁶ = 23772289441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2377228946 + ... + 2377228955.

It is an arithmetic number, because the mean of its divisors is an integer number (7131686853).

Almost surely, 2^23772289505 is an apocalyptic number.

It is an amenable number.

23772289505 is a deficient number, since it is larger than the sum of its proper divisors (4754457907).

23772289505 is an equidigital number, since it uses as much as digits as its factorization.

23772289505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754457906.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 23772289505 in words is "twenty-three billion, seven hundred seventy-two million, two hundred eighty-nine thousand, five hundred five".