11133566454661 has 16 divisors (see below), whose sum is σ = 12765940549120. Its totient is φ = 9511673981040.

The previous prime is 11133566454623. The next prime is 11133566454683. The reversal of 11133566454661 is 16645466533111.

It is not a de Polignac number, because 11133566454661 - 2¹⁹ = 11133565930373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11133566454599 and 11133566454608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133566454761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8020690 + ... + 9305836.

It is an arithmetic number, because the mean of its divisors is an integer number (797871284320).

Almost surely, 2^{11133566454661} is an apocalyptic number.

It is an amenable number.

11133566454661 is a deficient number, since it is larger than the sum of its proper divisors (1632374094459).

11133566454661 is a wasteful number, since it uses less digits than its factorization.

11133566454661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289224.

The product of its digits is 4665600, while the sum is 52.

The spelling of 11133566454661 in words is "eleven trillion, one hundred thirty-three billion, five hundred sixty-six million, four hundred fifty-four thousand, six hundred sixty-one".