12664142016 has 28 divisors (see below), whose sum is σ = 33507209592. Its totient is φ = 4221380608.

The previous prime is 12664142003. The next prime is 12664142017. The reversal of 12664142016 is 61024146621.

It is not an unprimeable number, because it can be changed into a prime (12664142017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32979345 + ... + 32979728.

Almost surely, 2^12664142016 is an apocalyptic number.

12664142016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12664142016 is an abundant number, since it is smaller than the sum of its proper divisors (20843067576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12664142016 is an equidigital number, since it uses as much as digits as its factorization.

12664142016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65959088 (or 65959078 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

Adding to 12664142016 its reverse (61024146621), we get a palindrome (73688288637).

The spelling of 12664142016 in words is "twelve billion, six hundred sixty-four million, one hundred forty-two thousand, sixteen".