12166552442 has 16 divisors (see below), whose sum is σ = 19956434400. Its totient is φ = 5517048240.

The previous prime is 12166552393. The next prime is 12166552457. The reversal of 12166552442 is 24425566121.

It is a junction number, because it is equal to n+sod(n) for n = 12166552396 and 12166552405.

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, 650717 + ... + 669152.

It is an arithmetic number, because the mean of its divisors is an integer number (1247277150).

Almost surely, 2^12166552442 is an apocalyptic number.

12166552442 is a deficient number, since it is larger than the sum of its proper divisors (7789881958).

12166552442 is a wasteful number, since it uses less digits than its factorization.

12166552442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320301.

The product of its digits is 115200, while the sum is 38.

The spelling of 12166552442 in words is "twelve billion, one hundred sixty-six million, five hundred fifty-two thousand, four hundred forty-two".