11636868212 has 36 divisors (see below), whose sum is σ = 21508256196. Its totient is φ = 5508224640.

The previous prime is 11636868211. The next prime is 11636868233. The reversal of 11636868212 is 21286863611.

It can be written as a sum of positive squares in 2 ways, for example, as 8331308176 + 3305560036 = 91276^2 + 57494^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11636868211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3291998 + ... + 3295530.

It is an arithmetic number, because the mean of its divisors is an integer number (597451561).

Almost surely, 2^11636868212 is an apocalyptic number.

It is an amenable number.

11636868212 is a deficient number, since it is larger than the sum of its proper divisors (9871387984).

11636868212 is a wasteful number, since it uses less digits than its factorization.

11636868212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5856 (or 5835 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The spelling of 11636868212 in words is "eleven billion, six hundred thirty-six million, eight hundred sixty-eight thousand, two hundred twelve".