11765785212 has 36 divisors (see below), whose sum is σ = 29745280656. Its totient is φ = 3921402240.

The previous prime is 11765785183. The next prime is 11765785219. The reversal of 11765785212 is 21258756711.

11765785212 is a `hidden beast` number, since 1 + 1 + 76 + 57 + 8 + 521 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×11765785212³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11765785219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 325593 + ... + 359919.

It is an arithmetic number, because the mean of its divisors is an integer number (826257796).

Almost surely, 2^11765785212 is an apocalyptic number.

11765785212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11765785212 is an abundant number, since it is smaller than the sum of its proper divisors (17979495444).

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

11765785212 is a wasteful number, since it uses less digits than its factorization.

11765785212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43858 (or 43853 counting only the distinct ones).

The product of its digits is 235200, while the sum is 45.

The spelling of 11765785212 in words is "eleven billion, seven hundred sixty-five million, seven hundred eighty-five thousand, two hundred twelve".