11657217221054 has 16 divisors (see below), whose sum is σ = 18514752601248. Its totient is φ = 5485645938432.

The previous prime is 11657217221051. The next prime is 11657217221081. The reversal of 11657217221054 is 45012271275611.

It is a junction number, because it is equal to n+sod(n) for n = 11657217220996 and 11657217221014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11657217221051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1382759 + ... + 5022594.

It is an arithmetic number, because the mean of its divisors is an integer number (1157172037578).

Almost surely, 2^{11657217221054} is an apocalyptic number.

11657217221054 is a deficient number, since it is larger than the sum of its proper divisors (6857535380194).

11657217221054 is a wasteful number, since it uses less digits than its factorization.

11657217221054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6458899.

The product of its (nonzero) digits is 235200, while the sum is 44.

Adding to 11657217221054 its reverse (45012271275611), we get a palindrome (56669488496665).

The spelling of 11657217221054 in words is "eleven trillion, six hundred fifty-seven billion, two hundred seventeen million, two hundred twenty-one thousand, fifty-four".