11669853440 has 144 divisors (see below), whose sum is σ = 32079680640. Its totient is φ = 3984384000.

The previous prime is 11669853401. The next prime is 11669853449. The reversal of 11669853440 is 4435896611.

It is a super-2 number, since 2×11669853440² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11669853449) 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, 2246366 + ... + 2251554.

It is an arithmetic number, because the mean of its divisors is an integer number (222775560).

Almost surely, 2^11669853440 is an apocalyptic number.

11669853440 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 11669853440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16039840320).

11669853440 is an abundant number, since it is smaller than the sum of its proper divisors (20409827200).

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

11669853440 is an equidigital number, since it uses as much as digits as its factorization.

11669853440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468 (or 5454 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 11669853440 in words is "eleven billion, six hundred sixty-nine million, eight hundred fifty-three thousand, four hundred forty".