11551711520055 has 48 divisors (see below), whose sum is σ = 22631924638080. Its totient is φ = 5002846486848.

The previous prime is 11551711520053. The next prime is 11551711520081. The reversal of 11551711520055 is 55002511715511.

11551711520055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11551711520055 - 2¹ = 11551711520053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11551711519995 and 11551711520022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551711520051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 413581149 + ... + 413609078.

It is an arithmetic number, because the mean of its divisors is an integer number (471498429960).

Almost surely, 2^{11551711520055} is an apocalyptic number.

11551711520055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11551711520055 is a deficient number, since it is larger than the sum of its proper divisors (11080213118025).

11551711520055 is a wasteful number, since it uses less digits than its factorization.

11551711520055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827190268 (or 827190261 counting only the distinct ones).

The product of its (nonzero) digits is 43750, while the sum is 39.

The spelling of 11551711520055 in words is "eleven trillion, five hundred fifty-one billion, seven hundred eleven million, five hundred twenty thousand, fifty-five".