26607454121 has 2 divisors, whose sum is σ = 26607454122. Its totient is φ = 26607454120.

The previous prime is 26607454109. The next prime is 26607454157. The reversal of 26607454121 is 12145470662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20353016896 + 6254437225 = 142664^2 + 79085^2 .

It is a cyclic number.

It is not a de Polignac number, because 26607454121 - 2¹⁸ = 26607191977 is a prime.

It is a super-2 number, since 2×26607454121² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26607453121) 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, 13303727060 + 13303727061.

It is an arithmetic number, because the mean of its divisors is an integer number (13303727061).

Almost surely, 2^26607454121 is an apocalyptic number.

It is an amenable number.

26607454121 is a deficient number, since it is larger than the sum of its proper divisors (1).

26607454121 is an equidigital number, since it uses as much as digits as its factorization.

26607454121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 26607454121 in words is "twenty-six billion, six hundred seven million, four hundred fifty-four thousand, one hundred twenty-one".