11217170448 has 360 divisors, whose sum is σ = 37527875840. Its totient is φ = 3113510400.

The previous prime is 11217170441. The next prime is 11217170473. The reversal of 11217170448 is 84407171211.

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

It is not an unprimeable number, because it can be changed into a prime (11217170441) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10262190 + ... + 10263282.

Almost surely, 2^11217170448 is an apocalyptic number.

11217170448 is a gapful number since it is divisible by the number (18) 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 11217170448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18763937920).

11217170448 is an abundant number, since it is smaller than the sum of its proper divisors (26310705392).

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

11217170448 is a wasteful number, since it uses less digits than its factorization.

11217170448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The spelling of 11217170448 in words is "eleven billion, two hundred seventeen million, one hundred seventy thousand, four hundred forty-eight".