11542432161 has 32 divisors (see below), whose sum is σ = 17116807680. Its totient is φ = 6873698304.

The previous prime is 11542432141. The next prime is 11542432163. The reversal of 11542432161 is 16123424511.

It is not a de Polignac number, because 11542432161 - 2¹³ = 11542423969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11542432163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127761 + ... + 198513.

It is an arithmetic number, because the mean of its divisors is an integer number (534900240).

Almost surely, 2^11542432161 is an apocalyptic number.

It is an amenable number.

11542432161 is a deficient number, since it is larger than the sum of its proper divisors (5574375519).

11542432161 is a wasteful number, since it uses less digits than its factorization.

11542432161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70905.

The product of its digits is 5760, while the sum is 30.

Adding to 11542432161 its reverse (16123424511), we get a palindrome (27665856672).

The spelling of 11542432161 in words is "eleven billion, five hundred forty-two million, four hundred thirty-two thousand, one hundred sixty-one".