26345010641 has 2 divisors, whose sum is σ = 26345010642. Its totient is φ = 26345010640.

The previous prime is 26345010623. The next prime is 26345010667. The reversal of 26345010641 is 14601054362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24556143616 + 1788867025 = 156704^2 + 42295^2 .

It is a cyclic number.

It is not a de Polignac number, because 26345010641 - 2³⁴ = 9165141457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26345010598 and 26345010607.

It is not a weakly prime, because it can be changed into another prime (26345010611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13172505320 + 13172505321.

It is an arithmetic number, because the mean of its divisors is an integer number (13172505321).

Almost surely, 2^26345010641 is an apocalyptic number.

It is an amenable number.

26345010641 is a deficient number, since it is larger than the sum of its proper divisors (1).

26345010641 is an equidigital number, since it uses as much as digits as its factorization.

26345010641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 26345010641 in words is "twenty-six billion, three hundred forty-five million, ten thousand, six hundred forty-one".