11397484081 has 3 divisors (see below), whose sum is σ = 11397590841. Its totient is φ = 11397377322.

The previous prime is 11397484079. The next prime is 11397484139. The reversal of 11397484081 is 18048479311.

It is a happy number.

The square root of 11397484081 is 106759.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 11397484081 - 2¹ = 11397484079 is a prime.

It is a super-2 number, since 2×11397484081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11397484051) 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 2 ways as a sum of consecutive naturals, for example, 53380 + ... + 160138.

It is an arithmetic number, because the mean of its divisors is an integer number (3799196947).

Almost surely, 2^11397484081 is an apocalyptic number.

11397484081 is the 106759-th square number.

11397484081 is the 53380-th centered octagonal number.

It is an amenable number.

11397484081 is a deficient number, since it is larger than the sum of its proper divisors (106760).

11397484081 is an frugal number, since it uses more digits than its factorization.

11397484081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213518 (or 106759 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 11397484081 in words is "eleven billion, three hundred ninety-seven million, four hundred eighty-four thousand, eighty-one".