11163948656 has 80 divisors (see below), whose sum is σ = 26627248128. Its totient is φ = 4428864000.

The previous prime is 11163948643. The next prime is 11163948661. The reversal of 11163948656 is 65684936111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9956 + ... + 149756.

Almost surely, 2^11163948656 is an apocalyptic number.

11163948656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11163948656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13313624064).

11163948656 is an abundant number, since it is smaller than the sum of its proper divisors (15463299472).

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

11163948656 is a wasteful number, since it uses less digits than its factorization.

11163948656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139870 (or 139864 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The spelling of 11163948656 in words is "eleven billion, one hundred sixty-three million, nine hundred forty-eight thousand, six hundred fifty-six".