11522045161 has 4 divisors (see below), whose sum is σ = 12569503824. Its totient is φ = 10474586500.

The previous prime is 11522045111. The next prime is 11522045173. The reversal of 11522045161 is 16154022511.

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.

It is a cyclic number.

It is not a de Polignac number, because 11522045161 - 2¹³ = 11522036969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11522045111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523729315 + ... + 523729336.

It is an arithmetic number, because the mean of its divisors is an integer number (3142375956).

Almost surely, 2^11522045161 is an apocalyptic number.

11522045161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11522045161 is a deficient number, since it is larger than the sum of its proper divisors (1047458663).

11522045161 is a wasteful number, since it uses less digits than its factorization.

11522045161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047458662.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 11522045161 its reverse (16154022511), we get a palindrome (27676067672).

The spelling of 11522045161 in words is "eleven billion, five hundred twenty-two million, forty-five thousand, one hundred sixty-one".