15809445223 has 16 divisors (see below), whose sum is σ = 18850559616. Its totient is φ = 13068649440.

The previous prime is 15809445203. The next prime is 15809445229. The reversal of 15809445223 is 32254490851.

It is not a de Polignac number, because 15809445223 - 2⁹ = 15809444711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15809445223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15809445229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815461 + ... + 834622.

It is an arithmetic number, because the mean of its divisors is an integer number (1178159976).

Almost surely, 2^15809445223 is an apocalyptic number.

15809445223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15809445223 is a deficient number, since it is larger than the sum of its proper divisors (3041114393).

15809445223 is a wasteful number, since it uses less digits than its factorization.

15809445223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650174.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 15809445223 in words is "fifteen billion, eight hundred nine million, four hundred forty-five thousand, two hundred twenty-three".