11217162050657 has 4 divisors (see below), whose sum is σ = 11218765196436. Its totient is φ = 11215558904880.

The previous prime is 11217162050639. The next prime is 11217162050663. The reversal of 11217162050657 is 75605026171211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8577394980961 + 2639767069696 = 2928719^2 + 1624736^2 .

It is a cyclic number.

It is not a de Polignac number, because 11217162050657 - 2¹⁸ = 11217161788513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11217162056657) 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 3 ways as a sum of consecutive naturals, for example, 801562394 + ... + 801576387.

It is an arithmetic number, because the mean of its divisors is an integer number (2804691299109).

Almost surely, 2^{11217162050657} is an apocalyptic number.

It is an amenable number.

11217162050657 is a deficient number, since it is larger than the sum of its proper divisors (1603145779).

11217162050657 is an equidigital number, since it uses as much as digits as its factorization.

11217162050657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603145778.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 11217162050657 in words is "eleven trillion, two hundred seventeen billion, one hundred sixty-two million, fifty thousand, six hundred fifty-seven".