26405666223 has 16 divisors (see below), whose sum is σ = 36042188160. Its totient is φ = 17186821344.

The previous prime is 26405666219. The next prime is 26405666227. The reversal of 26405666223 is 32266650462.

It is an interprime number because it is at equal distance from previous prime (26405666219) and next prime (26405666227).

It is not a de Polignac number, because 26405666223 - 2² = 26405666219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26405666227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257088 + ... + 344826.

It is an arithmetic number, because the mean of its divisors is an integer number (2252636760).

Almost surely, 2^26405666223 is an apocalyptic number.

26405666223 is a deficient number, since it is larger than the sum of its proper divisors (9636521937).

26405666223 is a wasteful number, since it uses less digits than its factorization.

26405666223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90118.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 26405666223 in words is "twenty-six billion, four hundred five million, six hundred sixty-six thousand, two hundred twenty-three".