26664402221235 has 24 divisors (see below), whose sum is σ = 46219204633680. Its totient is φ = 14220735302592.

The previous prime is 26664402221203. The next prime is 26664402221243. The reversal of 26664402221235 is 53212220446662.

It is not a de Polignac number, because 26664402221235 - 2⁵ = 26664402221203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3489345 + ... + 8093474.

It is an arithmetic number, because the mean of its divisors is an integer number (1925800193070).

Almost surely, 2^{26664402221235} is an apocalyptic number.

26664402221235 is a deficient number, since it is larger than the sum of its proper divisors (19554802412445).

26664402221235 is a wasteful number, since it uses less digits than its factorization.

26664402221235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11633987 (or 11633984 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

Adding to 26664402221235 its reverse (53212220446662), we get a palindrome (79876622667897).

The spelling of 26664402221235 in words is "twenty-six trillion, six hundred sixty-four billion, four hundred two million, two hundred twenty-one thousand, two hundred thirty-five".