11117506644 has 72 divisors (see below), whose sum is σ = 28632240000. Its totient is φ = 3636226944.

The previous prime is 11117506607. The next prime is 11117506691. The reversal of 11117506644 is 44660571111.

11117506644 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 7 + 5 + 0 + 6 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11117506599 and 11117506608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1203957 + ... + 1213155.

It is an arithmetic number, because the mean of its divisors is an integer number (397670000).

Almost surely, 2^11117506644 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 11117506644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14316120000).

11117506644 is an abundant number, since it is smaller than the sum of its proper divisors (17514733356).

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

11117506644 is a wasteful number, since it uses less digits than its factorization.

11117506644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9837 (or 9832 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 11117506644 in words is "eleven billion, one hundred seventeen million, five hundred six thousand, six hundred forty-four".