26810464643 has 2 divisors, whose sum is σ = 26810464644. Its totient is φ = 26810464642.

The previous prime is 26810464621. The next prime is 26810464657. The reversal of 26810464643 is 34646401862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26810464643 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 26810464594 and 26810464603.

It is not a weakly prime, because it can be changed into another prime (26810464943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13405232321 + 13405232322.

It is an arithmetic number, because the mean of its divisors is an integer number (13405232322).

Almost surely, 2^26810464643 is an apocalyptic number.

26810464643 is a deficient number, since it is larger than the sum of its proper divisors (1).

26810464643 is an equidigital number, since it uses as much as digits as its factorization.

26810464643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 26810464643 in words is "twenty-six billion, eight hundred ten million, four hundred sixty-four thousand, six hundred forty-three".