11056055515 has 4 divisors (see below), whose sum is σ = 13267266624. Its totient is φ = 8844844408.

The previous prime is 11056055503. The next prime is 11056055551. The reversal of 11056055515 is 51555065011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11056055515 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105605547 + ... + 1105605556.

It is an arithmetic number, because the mean of its divisors is an integer number (3316816656).

Almost surely, 2^11056055515 is an apocalyptic number.

11056055515 is a deficient number, since it is larger than the sum of its proper divisors (2211211109).

11056055515 is an equidigital number, since it uses as much as digits as its factorization.

11056055515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211211108.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 11056055515 in words is "eleven billion, fifty-six million, fifty-five thousand, five hundred fifteen".