11627955889 has 9 divisors (see below), whose sum is σ = 12782445529. Its totient is φ = 10569790660.

The previous prime is 11627955887. The next prime is 11627955961. The reversal of 11627955889 is 98855972611.

The square root of 11627955889 is 107833.

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

It is not a de Polignac number, because 11627955889 - 2¹ = 11627955887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11627955887) 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, 1181262 + ... + 1191064.

Almost surely, 2^11627955889 is an apocalyptic number.

11627955889 is the 107833-rd square number.

11627955889 is the 53917-th centered octagonal number.

It is an amenable number.

11627955889 is a deficient number, since it is larger than the sum of its proper divisors (1154489640).

11627955889 is an frugal number, since it uses more digits than its factorization.

11627955889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19628 (or 9814 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 61.

The spelling of 11627955889 in words is "eleven billion, six hundred twenty-seven million, nine hundred fifty-five thousand, eight hundred eighty-nine".