11156717055 has 32 divisors (see below), whose sum is σ = 19764211968. Its totient is φ = 5328576000.

The previous prime is 11156716999. The next prime is 11156717081. The reversal of 11156717055 is 55071765111.

It is not a de Polignac number, because 11156717055 - 2¹³ = 11156708863 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 493546 + ... + 515655.

It is an arithmetic number, because the mean of its divisors is an integer number (617631624).

Almost surely, 2^11156717055 is an apocalyptic number.

11156717055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11156717055 is a deficient number, since it is larger than the sum of its proper divisors (8607494913).

11156717055 is a wasteful number, since it uses less digits than its factorization.

11156717055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009287.

The product of its (nonzero) digits is 36750, while the sum is 39.

The spelling of 11156717055 in words is "eleven billion, one hundred fifty-six million, seven hundred seventeen thousand, fifty-five".