26218223316667 has 4 divisors (see below), whose sum is σ = 26232542391856. Its totient is φ = 26203904241480.

The previous prime is 26218223316617. The next prime is 26218223316673. The reversal of 26218223316667 is 76661332281262.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26218223316667 is a prime.

It is a super-2 number, since 2×26218223316667² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26218223316617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7159534848 + ... + 7159538509.

It is an arithmetic number, because the mean of its divisors is an integer number (6558135597964).

Almost surely, 2^{26218223316667} is an apocalyptic number.

26218223316667 is a deficient number, since it is larger than the sum of its proper divisors (14319075189).

26218223316667 is a wasteful number, since it uses less digits than its factorization.

26218223316667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14319075188.

The product of its digits is 10450944, while the sum is 55.

The spelling of 26218223316667 in words is "twenty-six trillion, two hundred eighteen billion, two hundred twenty-three million, three hundred sixteen thousand, six hundred sixty-seven".