11717222400 has 672 divisors, whose sum is σ = 46643056320. Its totient is φ = 2866544640.

The previous prime is 11717222359. The next prime is 11717222401. The reversal of 11717222400 is 422271711.

It is a happy number.

11717222400 is a `hidden beast` number, since 1 + 171 + 72 + 22 + 400 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11717222401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71884719 + ... + 71884881.

It is an arithmetic number, because the mean of its divisors is an integer number (69409310).

Almost surely, 2^11717222400 is an apocalyptic number.

11717222400 is a gapful number since it is divisible by the number (10) 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 11717222400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23321528160).

11717222400 is an abundant number, since it is smaller than the sum of its proper divisors (34925833920).

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

11717222400 is a wasteful number, since it uses less digits than its factorization.

11717222400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The spelling of 11717222400 in words is "eleven billion, seven hundred seventeen million, two hundred twenty-two thousand, four hundred".