12167215634 has 32 divisors (see below), whose sum is σ = 21011460480. Its totient is φ = 5176315008.

The previous prime is 12167215633. The next prime is 12167215657. The reversal of 12167215634 is 43651276121.

12167215634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12167215634² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12167215633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1107014 + ... + 1117950.

It is an arithmetic number, because the mean of its divisors is an integer number (656608140).

Almost surely, 2^12167215634 is an apocalyptic number.

12167215634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12167215634 is a deficient number, since it is larger than the sum of its proper divisors (8844244846).

12167215634 is a wasteful number, since it uses less digits than its factorization.

12167215634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11522.

The product of its digits is 60480, while the sum is 38.

The spelling of 12167215634 in words is "twelve billion, one hundred sixty-seven million, two hundred fifteen thousand, six hundred thirty-four".