11155042210554 has 256 divisors, whose sum is σ = 30167840102400. Its totient is φ = 3011271552000.

The previous prime is 11155042210483. The next prime is 11155042210601. The reversal of 11155042210554 is 45501224055111.

11155042210554 is a `hidden beast` number, since 1 + 1 + 1 + 5 + 50 + 42 + 2 + 10 + 554 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 214283829 + ... + 214335879.

It is an arithmetic number, because the mean of its divisors is an integer number (117843125400).

Almost surely, 2^{11155042210554} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11155042210554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15083920051200).

11155042210554 is an abundant number, since it is smaller than the sum of its proper divisors (19012797891846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11155042210554 is a wasteful number, since it uses less digits than its factorization.

11155042210554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53226 (or 53220 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

Adding to 11155042210554 its reverse (45501224055111), we get a palindrome (56656266265665).

The spelling of 11155042210554 in words is "eleven trillion, one hundred fifty-five billion, forty-two million, two hundred ten thousand, five hundred fifty-four".