11565664023020 has 48 divisors (see below), whose sum is σ = 25037903913120. Its totient is φ = 4485554919936.

The previous prime is 11565664022999. The next prime is 11565664023031. The reversal of 11565664023020 is 2032046656511.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67046807 + ... + 67219086.

It is an arithmetic number, because the mean of its divisors is an integer number (521622998190).

Almost surely, 2^{11565664023020} is an apocalyptic number.

11565664023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11565664023020 is an abundant number, since it is smaller than the sum of its proper divisors (13472239890100).

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

11565664023020 is a wasteful number, since it uses less digits than its factorization.

11565664023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134266034 (or 134266032 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 11565664023020 in words is "eleven trillion, five hundred sixty-five billion, six hundred sixty-four million, twenty-three thousand, twenty".