11420445040 has 120 divisors (see below), whose sum is σ = 27435480624. Its totient is φ = 4420915200.

The previous prime is 11420445037. The next prime is 11420445053. The reversal of 11420445040 is 4054402411.

It is a junction number, because it is equal to n+sod(n) for n = 11420444996 and 11420445014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21919980 + ... + 21920500.

Almost surely, 2^11420445040 is an apocalyptic number.

11420445040 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 11420445040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13717740312).

11420445040 is an abundant number, since it is smaller than the sum of its proper divisors (16015035584).

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

11420445040 is a wasteful number, since it uses less digits than its factorization.

11420445040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 11420445040 its reverse (4054402411), we get a palindrome (15474847451).

The spelling of 11420445040 in words is "eleven billion, four hundred twenty million, four hundred forty-five thousand, forty".