11554143212 has 6 divisors (see below), whose sum is σ = 20219750628. Its totient is φ = 5777071604.

The previous prime is 11554143131. The next prime is 11554143241. The reversal of 11554143212 is 21234145511.

It is a happy number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1444267898 + ... + 1444267905.

It is an arithmetic number, because the mean of its divisors is an integer number (3369958438).

Almost surely, 2^11554143212 is an apocalyptic number.

It is an amenable number.

11554143212 is a deficient number, since it is larger than the sum of its proper divisors (8665607416).

11554143212 is a wasteful number, since it uses less digits than its factorization.

11554143212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888535807 (or 2888535805 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

Adding to 11554143212 its reverse (21234145511), we get a palindrome (32788288723).

The spelling of 11554143212 in words is "eleven billion, five hundred fifty-four million, one hundred forty-three thousand, two hundred twelve".