11115663620 has 24 divisors (see below), whose sum is σ = 23482678464. Its totient is φ = 4419639776.

The previous prime is 11115663619. The next prime is 11115663623. The reversal of 11115663620 is 2636651111.

It is not an unprimeable number, because it can be changed into a prime (11115663623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1660682 + ... + 1667361.

It is an arithmetic number, because the mean of its divisors is an integer number (978444936).

Almost surely, 2^11115663620 is an apocalyptic number.

11115663620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11115663620 is an abundant number, since it is smaller than the sum of its proper divisors (12367014844).

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

11115663620 is a wasteful number, since it uses less digits than its factorization.

11115663620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328219 (or 3328217 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 11115663620 in words is "eleven billion, one hundred fifteen million, six hundred sixty-three thousand, six hundred twenty".