11056645556 has 36 divisors (see below), whose sum is σ = 21762698496. Its totient is φ = 4908860880.

The previous prime is 11056645541. The next prime is 11056645559. The reversal of 11056645556 is 65554665011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11056645559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244820 + ... + 286443.

Almost surely, 2^11056645556 is an apocalyptic number.

It is an amenable number.

11056645556 is a deficient number, since it is larger than the sum of its proper divisors (10706052940).

11056645556 is a wasteful number, since it uses less digits than its factorization.

11056645556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531332 (or 531319 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 11056645556 in words is "eleven billion, fifty-six million, six hundred forty-five thousand, five hundred fifty-six".