11121566541 has 8 divisors (see below), whose sum is σ = 15307102464. Its totient is φ = 7175204160.

The previous prime is 11121566537. The next prime is 11121566551. The reversal of 11121566541 is 14566512111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11121566541 - 2² = 11121566537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121566501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59793276 + ... + 59793461.

It is an arithmetic number, because the mean of its divisors is an integer number (1913387808).

Almost surely, 2^11121566541 is an apocalyptic number.

It is an amenable number.

11121566541 is a deficient number, since it is larger than the sum of its proper divisors (4185535923).

11121566541 is a wasteful number, since it uses less digits than its factorization.

11121566541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119586771.

The product of its digits is 7200, while the sum is 33.

The spelling of 11121566541 in words is "eleven billion, one hundred twenty-one million, five hundred sixty-six thousand, five hundred forty-one".