26401303221 has 8 divisors (see below), whose sum is σ = 35204557440. Its totient is φ = 17599458912.

The previous prime is 26401303207. The next prime is 26401303223. The reversal of 26401303221 is 12230310462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26401303221 - 2⁹ = 26401302709 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26401303191 and 26401303200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26401303223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307981 + ... + 384258.

It is an arithmetic number, because the mean of its divisors is an integer number (4400569680).

Almost surely, 2^26401303221 is an apocalyptic number.

It is an amenable number.

26401303221 is a deficient number, since it is larger than the sum of its proper divisors (8803254219).

26401303221 is a wasteful number, since it uses less digits than its factorization.

26401303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704955.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 26401303221 its reverse (12230310462), we get a palindrome (38631613683).

The spelling of 26401303221 in words is "twenty-six billion, four hundred one million, three hundred three thousand, two hundred twenty-one".