11116420512640 has 64 divisors (see below), whose sum is σ = 26579261946960. Its totient is φ = 4445887352832.

The previous prime is 11116420512629. The next prime is 11116420512641. The reversal of 11116420512640 is 4621502461111.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 11116420512596 and 11116420512605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11116420512641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2863564 + ... + 5516596.

Almost surely, 2^{11116420512640} is an apocalyptic number.

11116420512640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11116420512640 is an abundant number, since it is smaller than the sum of its proper divisors (15462841434320).

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

11116420512640 is an equidigital number, since it uses as much as digits as its factorization.

11116420512640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659599 (or 2659587 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

Adding to 11116420512640 its reverse (4621502461111), we get a palindrome (15737922973751).

The spelling of 11116420512640 in words is "eleven trillion, one hundred sixteen billion, four hundred twenty million, five hundred twelve thousand, six hundred forty".