11156055556 has 12 divisors (see below), whose sum is σ = 19999270620. Its totient is φ = 5441978240.

The previous prime is 11156055541. The next prime is 11156055563. The reversal of 11156055556 is 65555065111.

It can be written as a sum of positive squares in 2 ways, for example, as 262958656 + 10893096900 = 16216^2 + 104370^2 .

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, 34012201 + ... + 34012528.

It is an arithmetic number, because the mean of its divisors is an integer number (1666605885).

Almost surely, 2^11156055556 is an apocalyptic number.

It is an amenable number.

11156055556 is a deficient number, since it is larger than the sum of its proper divisors (8843215064).

11156055556 is a wasteful number, since it uses less digits than its factorization.

11156055556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68024774 (or 68024772 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 11156055556 in words is "eleven billion, one hundred fifty-six million, fifty-five thousand, five hundred fifty-six".