11449851280 has 160 divisors (see below), whose sum is σ = 31761895680. Its totient is φ = 3756533760.

The previous prime is 11449851247. The next prime is 11449851289. The reversal of 11449851280 is 8215894411.

It is not an unprimeable number, because it can be changed into a prime (11449851289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1259391 + ... + 1268449.

It is an arithmetic number, because the mean of its divisors is an integer number (198511848).

Almost surely, 2^11449851280 is an apocalyptic number.

11449851280 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 11449851280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15880947840).

11449851280 is an abundant number, since it is smaller than the sum of its proper divisors (20312044400).

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

11449851280 is a wasteful number, since it uses less digits than its factorization.

11449851280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9177 (or 9171 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The spelling of 11449851280 in words is "eleven billion, four hundred forty-nine million, eight hundred fifty-one thousand, two hundred eighty".