26798999603 has 2 divisors, whose sum is σ = 26798999604. Its totient is φ = 26798999602.

The previous prime is 26798999593. The next prime is 26798999639. The reversal of 26798999603 is 30699989762.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26798999603 - 2⁴ = 26798999587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (26798999803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13399499801 + 13399499802.

It is an arithmetic number, because the mean of its divisors is an integer number (13399499802).

Almost surely, 2^26798999603 is an apocalyptic number.

26798999603 is a deficient number, since it is larger than the sum of its proper divisors (1).

26798999603 is an equidigital number, since it uses as much as digits as its factorization.

26798999603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79361856, while the sum is 68.

The spelling of 26798999603 in words is "twenty-six billion, seven hundred ninety-eight million, nine hundred ninety-nine thousand, six hundred three".