26728067467904 has 32 divisors (see below), whose sum is σ = 58087987539840. Its totient is φ = 12149121575680.

The previous prime is 26728067467891. The next prime is 26728067467909. The reversal of 26728067467904 is 40976476082762.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (26728067467909) 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, 9491499824 + ... + 9491502639.

It is an arithmetic number, because the mean of its divisors is an integer number (1815249610620).

Almost surely, 2^{26728067467904} is an apocalyptic number.

It is an amenable number.

26728067467904 is an abundant number, since it is smaller than the sum of its proper divisors (31359920071936).

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

26728067467904 is a wasteful number, since it uses less digits than its factorization.

26728067467904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18983002488 (or 18983002476 counting only the distinct ones).

The product of its (nonzero) digits is 341397504, while the sum is 68.

The spelling of 26728067467904 in words is "twenty-six trillion, seven hundred twenty-eight billion, sixty-seven million, four hundred sixty-seven thousand, nine hundred four".