12165029894 has 4 divisors (see below), whose sum is σ = 18247544844. Its totient is φ = 6082514946.

The previous prime is 12165029893. The next prime is 12165029897. The reversal of 12165029894 is 49892056121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49892056121 = 25037 ⋅1992733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12165029893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3041257472 + ... + 3041257475.

It is an arithmetic number, because the mean of its divisors is an integer number (4561886211).

Almost surely, 2^12165029894 is an apocalyptic number.

12165029894 is a deficient number, since it is larger than the sum of its proper divisors (6082514950).

12165029894 is an equidigital number, since it uses as much as digits as its factorization.

12165029894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082514949.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 12165029894 in words is "twelve billion, one hundred sixty-five million, twenty-nine thousand, eight hundred ninety-four".