11016551555549 has 4 divisors (see below), whose sum is σ = 11096964340764. Its totient is φ = 10936138770336.

The previous prime is 11016551555533. The next prime is 11016551555573. The reversal of 11016551555549 is 94555515561011.

11016551555549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5058158431225 + 5958393124324 = 2249035^2 + 2440982^2 .

It is a cyclic number.

It is not a de Polignac number, because 11016551555549 - 2⁴ = 11016551555533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11016551555549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11016551558549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40206392402 + ... + 40206392675.

It is an arithmetic number, because the mean of its divisors is an integer number (2774241085191).

Almost surely, 2^{11016551555549} is an apocalyptic number.

It is an amenable number.

11016551555549 is a deficient number, since it is larger than the sum of its proper divisors (80412785215).

11016551555549 is an equidigital number, since it uses as much as digits as its factorization.

11016551555549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80412785214.

The product of its (nonzero) digits is 3375000, while the sum is 53.

The spelling of 11016551555549 in words is "eleven trillion, sixteen billion, five hundred fifty-one million, five hundred fifty-five thousand, five hundred forty-nine".