11685959520 has 48 divisors (see below), whose sum is σ = 36810774000. Its totient is φ = 3116255744.

The previous prime is 11685959497. The next prime is 11685959561. The reversal of 11685959520 is 2595958611.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12172395 + ... + 12173354.

It is an arithmetic number, because the mean of its divisors is an integer number (766891125).

Almost surely, 2^11685959520 is an apocalyptic number.

11685959520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11685959520 is an abundant number, since it is smaller than the sum of its proper divisors (25124814480).

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

11685959520 is a wasteful number, since it uses less digits than its factorization.

11685959520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24345767 (or 24345759 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 51.

Subtracting from 11685959520 its reverse (2595958611), we obtain a palindrome (9090000909).

The spelling of 11685959520 in words is "eleven billion, six hundred eighty-five million, nine hundred fifty-nine thousand, five hundred twenty".