11445843520 has 28 divisors (see below), whose sum is σ = 27255415644. Its totient is φ = 4578337280.

The previous prime is 11445843499. The next prime is 11445843571. The reversal of 11445843520 is 2534854411.

It can be written as a sum of positive squares in 2 ways, for example, as 4818581056 + 6627262464 = 69416^2 + 81408^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11445843520.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17883811 + ... + 17884450.

Almost surely, 2^11445843520 is an apocalyptic number.

11445843520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11445843520 is an abundant number, since it is smaller than the sum of its proper divisors (15809572124).

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

11445843520 is an equidigital number, since it uses as much as digits as its factorization.

11445843520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35768278 (or 35768268 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 11445843520 in words is "eleven billion, four hundred forty-five million, eight hundred forty-three thousand, five hundred twenty".