11305215020 has 24 divisors (see below), whose sum is σ = 25899220368. Its totient is φ = 4110987200.

The previous prime is 11305214989. The next prime is 11305215041. The reversal of 11305215020 is 2051250311.

It is a happy number.

11305215020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11305214983 and 11305215001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25693451 + ... + 25693890.

It is an arithmetic number, because the mean of its divisors is an integer number (1079134182).

Almost surely, 2^11305215020 is an apocalyptic number.

11305215020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11305215020 is an abundant number, since it is smaller than the sum of its proper divisors (14594005348).

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

11305215020 is a wasteful number, since it uses less digits than its factorization.

11305215020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51387361 (or 51387359 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 11305215020 its reverse (2051250311), we get a palindrome (13356465331).

The spelling of 11305215020 in words is "eleven billion, three hundred five million, two hundred fifteen thousand, twenty".