26664320012 has 48 divisors (see below), whose sum is σ = 51235666944. Its totient is φ = 12041568000.

The previous prime is 26664319999. The next prime is 26664320027. The reversal of 26664320012 is 21002346662.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4906937 + ... + 4912367.

It is an arithmetic number, because the mean of its divisors is an integer number (1067409728).

Almost surely, 2^26664320012 is an apocalyptic number.

26664320012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

26664320012 is a deficient number, since it is larger than the sum of its proper divisors (24571346932).

26664320012 is a wasteful number, since it uses less digits than its factorization.

26664320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150 (or 6148 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 26664320012 its reverse (21002346662), we get a palindrome (47666666674).

The spelling of 26664320012 in words is "twenty-six billion, six hundred sixty-four million, three hundred twenty thousand, twelve".