26533400161 has 2 divisors, whose sum is σ = 26533400162. Its totient is φ = 26533400160.

The previous prime is 26533400149. The next prime is 26533400171. The reversal of 26533400161 is 16100433562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26471290000 + 62110161 = 162700^2 + 7881^2 .

It is a cyclic number.

It is not a de Polignac number, because 26533400161 - 2⁵ = 26533400129 is a prime.

It is not a weakly prime, because it can be changed into another prime (26533400171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13266700080 + 13266700081.

It is an arithmetic number, because the mean of its divisors is an integer number (13266700081).

Almost surely, 2^26533400161 is an apocalyptic number.

It is an amenable number.

26533400161 is a deficient number, since it is larger than the sum of its proper divisors (1).

26533400161 is an equidigital number, since it uses as much as digits as its factorization.

26533400161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 26533400161 in words is "twenty-six billion, five hundred thirty-three million, four hundred thousand, one hundred sixty-one".