11452012161 has 4 divisors (see below), whose sum is σ = 15269349552. Its totient is φ = 7634674772.

The previous prime is 11452012147. The next prime is 11452012163. The reversal of 11452012161 is 16121025411.

11452012161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16121025411 = 3 ⋅5373675137.

It is a cyclic number.

It is not a de Polignac number, because 11452012161 - 2¹¹ = 11452010113 is a prime.

It is a super-2 number, since 2×11452012161² (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 (11452012163) 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 3 ways as a sum of consecutive naturals, for example, 1908668691 + ... + 1908668696.

It is an arithmetic number, because the mean of its divisors is an integer number (3817337388).

Almost surely, 2^11452012161 is an apocalyptic number.

It is an amenable number.

11452012161 is a deficient number, since it is larger than the sum of its proper divisors (3817337391).

11452012161 is an equidigital number, since it uses as much as digits as its factorization.

11452012161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817337390.

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 11452012161 its reverse (16121025411), we get a palindrome (27573037572).

The spelling of 11452012161 in words is "eleven billion, four hundred fifty-two million, twelve thousand, one hundred sixty-one".