26121543163 has 2 divisors, whose sum is σ = 26121543164. Its totient is φ = 26121543162.

The previous prime is 26121543139. The next prime is 26121543181. The reversal of 26121543163 is 36134512162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26121543163 - 2⁵ = 26121543131 is a prime.

It is not a weakly prime, because it can be changed into another prime (26121543563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13060771581 + 13060771582.

It is an arithmetic number, because the mean of its divisors is an integer number (13060771582).

Almost surely, 2^26121543163 is an apocalyptic number.

26121543163 is a deficient number, since it is larger than the sum of its proper divisors (1).

26121543163 is an equidigital number, since it uses as much as digits as its factorization.

26121543163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The spelling of 26121543163 in words is "twenty-six billion, one hundred twenty-one million, five hundred forty-three thousand, one hundred sixty-three".