11551436212 has 6 divisors (see below), whose sum is σ = 20215013378. Its totient is φ = 5775718104.

The previous prime is 11551436203. The next prime is 11551436219. The reversal of 11551436212 is 21263415511.

It can be written as a sum of positive squares in only one way, i.e., 10392986916 + 1158449296 = 101946^2 + 34036^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551436219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1443929523 + ... + 1443929530.

Almost surely, 2^11551436212 is an apocalyptic number.

It is an amenable number.

11551436212 is a deficient number, since it is larger than the sum of its proper divisors (8663577166).

11551436212 is a wasteful number, since it uses less digits than its factorization.

11551436212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887859057 (or 2887859055 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The spelling of 11551436212 in words is "eleven billion, five hundred fifty-one million, four hundred thirty-six thousand, two hundred twelve".