26223196618 has 4 divisors (see below), whose sum is σ = 39334794930. Its totient is φ = 13111598308.

The previous prime is 26223196613. The next prime is 26223196619. The reversal of 26223196618 is 81669132262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22250793889 + 3972402729 = 149167^2 + 63027^2 .

It is not an unprimeable number, because it can be changed into a prime (26223196613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555799153 + ... + 6555799156.

Almost surely, 2^26223196618 is an apocalyptic number.

26223196618 is a deficient number, since it is larger than the sum of its proper divisors (13111598312).

26223196618 is a wasteful number, since it uses less digits than its factorization.

26223196618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13111598311.

The product of its digits is 373248, while the sum is 46.

The spelling of 26223196618 in words is "twenty-six billion, two hundred twenty-three million, one hundred ninety-six thousand, six hundred eighteen".