26015346349 has 2 divisors, whose sum is σ = 26015346350. Its totient is φ = 26015346348.

The previous prime is 26015346337. The next prime is 26015346389. The reversal of 26015346349 is 94364351062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19204970724 + 6810375625 = 138582^2 + 82525^2 .

It is a cyclic number.

It is not a de Polignac number, because 26015346349 - 2¹⁹ = 26014822061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26015346389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13007673174 + 13007673175.

It is an arithmetic number, because the mean of its divisors is an integer number (13007673175).

Almost surely, 2^26015346349 is an apocalyptic number.

It is an amenable number.

26015346349 is a deficient number, since it is larger than the sum of its proper divisors (1).

26015346349 is an equidigital number, since it uses as much as digits as its factorization.

26015346349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 26015346349 in words is "twenty-six billion, fifteen million, three hundred forty-six thousand, three hundred forty-nine".