15113505969 has 27 divisors (see below), whose sum is σ = 22373592267. Its totient is φ = 9831026016.

The previous prime is 15113505959. The next prime is 15113505989. The reversal of 15113505969 is 96950531151.

The square root of 15113505969 is 122937.

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

15113505969 is a `hidden beast` number, since 1 + 5 + 1 + 1 + 3 + 50 + 596 + 9 = 666.

15113505969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6294042225 + 8819463744 = 79335^2 + 93912^2 .

It is not a de Polignac number, because 15113505969 - 2¹⁵ = 15113473201 is a prime.

It is a super-2 number, since 2×15113505969² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15113505949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15858397 + ... + 15859349.

Almost surely, 2^15113505969 is an apocalyptic number.

15113505969 is the 122937-th square number.

15113505969 is the 61469-th centered octagonal number.

It is an amenable number.

15113505969 is a deficient number, since it is larger than the sum of its proper divisors (7260086298).

15113505969 is an frugal number, since it uses more digits than its factorization.

15113505969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 182250, while the sum is 45.

The spelling of 15113505969 in words is "fifteen billion, one hundred thirteen million, five hundred five thousand, nine hundred sixty-nine".