12533405421166 has 16 divisors (see below), whose sum is σ = 21597163454304. Its totient is φ = 5343628068864.

The previous prime is 12533405421067. The next prime is 12533405421167. The reversal of 12533405421166 is 66112450433521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12533405421167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2319280315 + ... + 2319285718.

It is an arithmetic number, because the mean of its divisors is an integer number (1349822715894).

Almost surely, 2^{12533405421166} is an apocalyptic number.

12533405421166 is a deficient number, since it is larger than the sum of its proper divisors (9063758033138).

12533405421166 is a wasteful number, since it uses less digits than its factorization.

12533405421166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638566235.

The product of its (nonzero) digits is 518400, while the sum is 43.

Adding to 12533405421166 its reverse (66112450433521), we get a palindrome (78645855854687).

The spelling of 12533405421166 in words is "twelve trillion, five hundred thirty-three billion, four hundred five million, four hundred twenty-one thousand, one hundred sixty-six".