11565725696 has 48 divisors (see below), whose sum is σ = 26429523120. Its totient is φ = 4956733440.

The previous prime is 11565725687. The next prime is 11565725707. The reversal of 11565725696 is 69652756511.

It is a happy number.

It is a super-2 number, since 2×11565725696² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389045 + ... + 417716.

It is an arithmetic number, because the mean of its divisors is an integer number (550615065).

Almost surely, 2^11565725696 is an apocalyptic number.

11565725696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11565725696 is an abundant number, since it is smaller than the sum of its proper divisors (14863797424).

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

11565725696 is an frugal number, since it uses more digits than its factorization.

11565725696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806790 (or 806770 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 53.

The spelling of 11565725696 in words is "eleven billion, five hundred sixty-five million, seven hundred twenty-five thousand, six hundred ninety-six".