26697621233 has 2 divisors, whose sum is σ = 26697621234. Its totient is φ = 26697621232.

The previous prime is 26697621211. The next prime is 26697621239. The reversal of 26697621233 is 33212679662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23687672464 + 3009948769 = 153908^2 + 54863^2 .

It is a cyclic number.

It is not a de Polignac number, because 26697621233 - 2⁶ = 26697621169 is a prime.

It is not a weakly prime, because it can be changed into another prime (26697621239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13348810616 + 13348810617.

It is an arithmetic number, because the mean of its divisors is an integer number (13348810617).

Almost surely, 2^26697621233 is an apocalyptic number.

It is an amenable number.

26697621233 is a deficient number, since it is larger than the sum of its proper divisors (1).

26697621233 is an equidigital number, since it uses as much as digits as its factorization.

26697621233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 47.

The spelling of 26697621233 in words is "twenty-six billion, six hundred ninety-seven million, six hundred twenty-one thousand, two hundred thirty-three".