11421444140 has 24 divisors (see below), whose sum is σ = 24542826000. Its totient is φ = 4462331328.

The previous prime is 11421444113. The next prime is 11421444193. The reversal of 11421444140 is 4144412411.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6639515 + ... + 6641234.

It is an arithmetic number, because the mean of its divisors is an integer number (1022617750).

Almost surely, 2^11421444140 is an apocalyptic number.

11421444140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11421444140 is an abundant number, since it is smaller than the sum of its proper divisors (13121381860).

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

11421444140 is a wasteful number, since it uses less digits than its factorization.

11421444140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13280801 (or 13280799 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 11421444140 its reverse (4144412411), we get a palindrome (15565856551).

The spelling of 11421444140 in words is "eleven billion, four hundred twenty-one million, four hundred forty-four thousand, one hundred forty".