11162201665541 has 4 divisors (see below), whose sum is σ = 11818801763532. Its totient is φ = 10505601567552.

The previous prime is 11162201665463. The next prime is 11162201665567. The reversal of 11162201665541 is 14556610226111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6261530313025 + 4900671352516 = 2502305^2 + 2213746^2 .

It is a cyclic number.

It is not a de Polignac number, because 11162201665541 - 2²² = 11162197471237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11162201662541) 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, 328300048970 + ... + 328300049003.

It is an arithmetic number, because the mean of its divisors is an integer number (2954700440883).

Almost surely, 2^{11162201665541} is an apocalyptic number.

It is an amenable number.

11162201665541 is a deficient number, since it is larger than the sum of its proper divisors (656600097991).

11162201665541 is an equidigital number, since it uses as much as digits as its factorization.

11162201665541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656600097990.

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 11162201665541 in words is "eleven trillion, one hundred sixty-two billion, two hundred one million, six hundred sixty-five thousand, five hundred forty-one".