26355267121 has 2 divisors, whose sum is σ = 26355267122. Its totient is φ = 26355267120.

The previous prime is 26355267119. The next prime is 26355267131. The reversal of 26355267121 is 12176255362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17150783521 + 9204483600 = 130961^2 + 95940^2 .

It is a cyclic number.

It is not a de Polignac number, because 26355267121 - 2¹ = 26355267119 is a prime.

Together with 26355267119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26355267101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13177633560 + 13177633561.

It is an arithmetic number, because the mean of its divisors is an integer number (13177633561).

Almost surely, 2^26355267121 is an apocalyptic number.

It is an amenable number.

26355267121 is a deficient number, since it is larger than the sum of its proper divisors (1).

26355267121 is an equidigital number, since it uses as much as digits as its factorization.

26355267121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The spelling of 26355267121 in words is "twenty-six billion, three hundred fifty-five million, two hundred sixty-seven thousand, one hundred twenty-one".