26968208399 has 16 divisors (see below), whose sum is σ = 29742709920. Its totient is φ = 24247848960.

The previous prime is 26968208341. The next prime is 26968208411. The reversal of 26968208399 is 99380286962.

It is a Cunningham number, because it is equal to 164220²-1.

It is a cyclic number.

It is not a de Polignac number, because 26968208399 - 2³² = 22673241103 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26968204399) 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, 1798967 + ... + 1813895.

It is an arithmetic number, because the mean of its divisors is an integer number (1858919370).

Almost surely, 2^26968208399 is an apocalyptic number.

26968208399 is a deficient number, since it is larger than the sum of its proper divisors (2774501521).

26968208399 is a wasteful number, since it uses less digits than its factorization.

26968208399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16730.

The product of its (nonzero) digits is 20155392, while the sum is 62.

The spelling of 26968208399 in words is "twenty-six billion, nine hundred sixty-eight million, two hundred eight thousand, three hundred ninety-nine".