12693852889 has 9 divisors (see below), whose sum is σ = 12912351231. Its totient is φ = 12478996920.

The previous prime is 12693852863. The next prime is 12693852923. The reversal of 12693852889 is 98825839621.

The square root of 12693852889 is 112667.

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., 412780489 + 12281072400 = 20317^2 + 110820^2 .

It is not a de Polignac number, because 12693852889 - 2¹⁵ = 12693820121 is a prime.

It is a super-2 number, since 2×12693852889² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12693852839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6871764 + ... + 6873610.

Almost surely, 2^12693852889 is an apocalyptic number.

12693852889 is the 112667-th square number.

12693852889 is the 56334-th centered octagonal number.

It is an amenable number.

12693852889 is a deficient number, since it is larger than the sum of its proper divisors (218498342).

12693852889 is an frugal number, since it uses more digits than its factorization.

12693852889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816 (or 1908 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 61.

The spelling of 12693852889 in words is "twelve billion, six hundred ninety-three million, eight hundred fifty-two thousand, eight hundred eighty-nine".