26181604801216 has 42 divisors (see below), whose sum is σ = 54832466786460. Its totient is φ = 12401812789632.

The previous prime is 26181604801193. The next prime is 26181604801217. The reversal of 26181604801216 is 61210840618162.

It is a super-3 number, since 3×26181604801216³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (26181604801217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 566580186 + ... + 566626393.

Almost surely, 2^{26181604801216} is an apocalyptic number.

It is an amenable number.

26181604801216 is an abundant number, since it is smaller than the sum of its proper divisors (28650861985244).

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

26181604801216 is a wasteful number, since it uses less digits than its factorization.

26181604801216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133206629 (or 1133206600 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The spelling of 26181604801216 in words is "twenty-six trillion, one hundred eighty-one billion, six hundred four million, eight hundred one thousand, two hundred sixteen".