26840630513 has 2 divisors, whose sum is σ = 26840630514. Its totient is φ = 26840630512.

The previous prime is 26840630473. The next prime is 26840630527. The reversal of 26840630513 is 31503604862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19787486224 + 7053144289 = 140668^2 + 83983^2 .

It is a cyclic number.

It is not a de Polignac number, because 26840630513 - 2¹⁶ = 26840564977 is a prime.

It is not a weakly prime, because it can be changed into another prime (26840630813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13420315256 + 13420315257.

It is an arithmetic number, because the mean of its divisors is an integer number (13420315257).

Almost surely, 2^26840630513 is an apocalyptic number.

It is an amenable number.

26840630513 is a deficient number, since it is larger than the sum of its proper divisors (1).

26840630513 is an equidigital number, since it uses as much as digits as its factorization.

26840630513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 26840630513 in words is "twenty-six billion, eight hundred forty million, six hundred thirty thousand, five hundred thirteen".