11161216056557 has 8 divisors (see below), whose sum is σ = 12755798979456. Its totient is φ = 9566664005232.

The previous prime is 11161216056509. The next prime is 11161216056581. The reversal of 11161216056557 is 75565061216111.

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

It is a cyclic number.

It is not a de Polignac number, because 11161216056557 - 2¹⁰ = 11161216055533 is a prime.

It is a super-2 number, since 2×11161216056557² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11161216056857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6937913 + ... + 8393870.

It is an arithmetic number, because the mean of its divisors is an integer number (1594474872432).

Almost surely, 2^{11161216056557} is an apocalyptic number.

It is an amenable number.

11161216056557 is a deficient number, since it is larger than the sum of its proper divisors (1594582922899).

11161216056557 is a wasteful number, since it uses less digits than its factorization.

11161216056557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15435787.

The product of its (nonzero) digits is 378000, while the sum is 47.

The spelling of 11161216056557 in words is "eleven trillion, one hundred sixty-one billion, two hundred sixteen million, fifty-six thousand, five hundred fifty-seven".