11420544616 has 64 divisors (see below), whose sum is σ = 23722146000. Its totient is φ = 5120299008.

The previous prime is 11420544613. The next prime is 11420544647. The reversal of 11420544616 is 61644502411.

It can be written as a sum of positive squares in 8 ways, for example, as 8109002500 + 3311542116 = 90050^2 + 57546^2 .

It is not an unprimeable number, because it can be changed into a prime (11420544613) 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, 2818560 + ... + 2822608.

Almost surely, 2^11420544616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11420544616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11861073000).

11420544616 is an abundant number, since it is smaller than the sum of its proper divisors (12301601384).

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

11420544616 is a wasteful number, since it uses less digits than its factorization.

11420544616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838 (or 4834 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 11420544616 in words is "eleven billion, four hundred twenty million, five hundred forty-four thousand, six hundred sixteen".