10985555344 has 15 divisors (see below), whose sum is σ = 21285325803. Its totient is φ = 5492568048.

The previous prime is 10985555341. The next prime is 10985555353. The reversal of 10985555344 is 44355558901.

The square root of 10985555344 is 104812.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10985555341) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 406147 + ... + 432349.

Almost surely, 2^10985555344 is an apocalyptic number.

10985555344 is the 104812-nd square number.

It is an amenable number.

10985555344 is a deficient number, since it is larger than the sum of its proper divisors (10299770459).

10985555344 is an frugal number, since it uses more digits than its factorization.

10985555344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52414 (or 26205 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 49.

Multiplying 10985555344 by its sum of digits (49), we get a square (538292211856 = 733684²).

The spelling of 10985555344 in words is "ten billion, nine hundred eighty-five million, five hundred fifty-five thousand, three hundred forty-four".