11133612061 has 16 divisors (see below), whose sum is σ = 13358354688. Its totient is φ = 9144100800.

The previous prime is 11133612059. The next prime is 11133612067. The reversal of 11133612061 is 16021633111.

It is a cyclic number.

It is not a de Polignac number, because 11133612061 - 2¹ = 11133612059 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 (11133612067) 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, 821550 + ... + 834991.

It is an arithmetic number, because the mean of its divisors is an integer number (834897168).

Almost surely, 2^11133612061 is an apocalyptic number.

11133612061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11133612061 is a deficient number, since it is larger than the sum of its proper divisors (2224742627).

11133612061 is a wasteful number, since it uses less digits than its factorization.

11133612061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656612.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 11133612061 in words is "eleven billion, one hundred thirty-three million, six hundred twelve thousand, sixty-one".