26645616467 has 2 divisors, whose sum is σ = 26645616468. Its totient is φ = 26645616466.

The previous prime is 26645616463. The next prime is 26645616497. The reversal of 26645616467 is 76461654662.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26645616467 - 2² = 26645616463 is a prime.

It is not a weakly prime, because it can be changed into another prime (26645616463) 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 as a sum of consecutive naturals, namely, 13322808233 + 13322808234.

It is an arithmetic number, because the mean of its divisors is an integer number (13322808234).

Almost surely, 2^26645616467 is an apocalyptic number.

26645616467 is a deficient number, since it is larger than the sum of its proper divisors (1).

26645616467 is an equidigital number, since it uses as much as digits as its factorization.

26645616467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 53.

The spelling of 26645616467 in words is "twenty-six billion, six hundred forty-five million, six hundred sixteen thousand, four hundred sixty-seven".