11154660506261 has 16 divisors (see below), whose sum is σ = 11410784280000. Its totient is φ = 10900939920000.

The previous prime is 11154660506243. The next prime is 11154660506287. The reversal of 11154660506261 is 16260506645111.

It is a cyclic number.

It is not a de Polignac number, because 11154660506261 - 2¹⁰ = 11154660505237 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 (11154660506291) 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, 6992615 + ... + 8438363.

It is an arithmetic number, because the mean of its divisors is an integer number (713174017500).

Almost surely, 2^{11154660506261} is an apocalyptic number.

It is an amenable number.

11154660506261 is a deficient number, since it is larger than the sum of its proper divisors (256123773739).

11154660506261 is a wasteful number, since it uses less digits than its factorization.

11154660506261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446580.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 11154660506261 in words is "eleven trillion, one hundred fifty-four billion, six hundred sixty million, five hundred six thousand, two hundred sixty-one".