26253750161 has 2 divisors, whose sum is σ = 26253750162. Its totient is φ = 26253750160.

The previous prime is 26253750119. The next prime is 26253750191. The reversal of 26253750161 is 16105735262.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14390401600 + 11863348561 = 119960^2 + 108919^2 .

It is a cyclic number.

It is not a de Polignac number, because 26253750161 - 2¹⁸ = 26253488017 is a prime.

It is not a weakly prime, because it can be changed into another prime (26253750191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13126875080 + 13126875081.

It is an arithmetic number, because the mean of its divisors is an integer number (13126875081).

Almost surely, 2^26253750161 is an apocalyptic number.

It is an amenable number.

26253750161 is a deficient number, since it is larger than the sum of its proper divisors (1).

26253750161 is an equidigital number, since it uses as much as digits as its factorization.

26253750161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 26253750161 in words is "twenty-six billion, two hundred fifty-three million, seven hundred fifty thousand, one hundred sixty-one".