26351368409 has 2 divisors, whose sum is σ = 26351368410. Its totient is φ = 26351368408.

The previous prime is 26351368367. The next prime is 26351368429. The reversal of 26351368409 is 90486315362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26101633600 + 249734809 = 161560^2 + 15803^2 .

It is a cyclic number.

It is not a de Polignac number, because 26351368409 - 2²⁰ = 26350319833 is a prime.

It is not a weakly prime, because it can be changed into another prime (26351368429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13175684204 + 13175684205.

It is an arithmetic number, because the mean of its divisors is an integer number (13175684205).

Almost surely, 2^26351368409 is an apocalyptic number.

It is an amenable number.

26351368409 is a deficient number, since it is larger than the sum of its proper divisors (1).

26351368409 is an equidigital number, since it uses as much as digits as its factorization.

26351368409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 26351368409 in words is "twenty-six billion, three hundred fifty-one million, three hundred sixty-eight thousand, four hundred nine".