5511005656 has 64 divisors (see below), whose sum is σ = 11546599680. Its totient is φ = 2448714240.

The previous prime is 5511005653. The next prime is 5511005659. The reversal of 5511005656 is 6565001155.

It is an interprime number because it is at equal distance from previous prime (5511005653) and next prime (5511005659).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511005653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630790 + ... + 639466.

It is an arithmetic number, because the mean of its divisors is an integer number (180415620).

Almost surely, 2^5511005656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5511005656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5773299840).

5511005656 is an abundant number, since it is smaller than the sum of its proper divisors (6035594024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5511005656 is a wasteful number, since it uses less digits than its factorization.

5511005656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8924 (or 8920 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 5511005656 is about 74236.1479065287. The cubic root of 5511005656 is about 1766.3507710648.

The spelling of 5511005656 in words is "five billion, five hundred eleven million, five thousand, six hundred fifty-six".