15223364689 has 9 divisors (see below), whose sum is σ = 16486208859. Its totient is φ = 14050856040.

The previous prime is 15223364669. The next prime is 15223364707. The reversal of 15223364689 is 98646332251.

The square root of 15223364689 is 123383.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2251977025 + 12971387664 = 47455^2 + 113892^2 .

It is not a de Polignac number, because 15223364689 - 2¹¹ = 15223362641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15223364609) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1599234 + ... + 1608724.

Almost surely, 2^15223364689 is an apocalyptic number.

15223364689 is the 123383-rd square number.

15223364689 is the 61692-nd centered octagonal number.

It is an amenable number.

15223364689 is a deficient number, since it is larger than the sum of its proper divisors (1262844170).

15223364689 is an frugal number, since it uses more digits than its factorization.

15223364689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19008 (or 9504 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

Multiplying 15223364689 by its sum of digits (49), we get a square (745944869761 = 863681²).

The spelling of 15223364689 in words is "fifteen billion, two hundred twenty-three million, three hundred sixty-four thousand, six hundred eighty-nine".