11100105005551 has 8 divisors (see below), whose sum is σ = 11210551228800. Its totient is φ = 10989815335200.

The previous prime is 11100105005417. The next prime is 11100105005567. The reversal of 11100105005551 is 15550050100111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11100105005551 is a prime.

It is a super-2 number, since 2×11100105005551² (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 (11100105005251) 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, 38995711 + ... + 39279328.

It is an arithmetic number, because the mean of its divisors is an integer number (1401318903600).

Almost surely, 2^{11100105005551} is an apocalyptic number.

11100105005551 is a deficient number, since it is larger than the sum of its proper divisors (110446223249).

11100105005551 is a wasteful number, since it uses less digits than its factorization.

11100105005551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78276449.

The product of its (nonzero) digits is 625, while the sum is 25.

Adding to 11100105005551 its reverse (15550050100111), we get a palindrome (26650155105662).

The spelling of 11100105005551 in words is "eleven trillion, one hundred billion, one hundred five million, five thousand, five hundred fifty-one".