65605591043 has 2 divisors, whose sum is σ = 65605591044. Its totient is φ = 65605591042.

The previous prime is 65605591027. The next prime is 65605591067. The reversal of 65605591043 is 34019550656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65605591043 - 2⁴ = 65605591027 is a prime.

It is a super-2 number, since 2×65605591043² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65605590985 and 65605591003.

It is not a weakly prime, because it can be changed into another prime (65605591343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32802795521 + 32802795522.

It is an arithmetic number, because the mean of its divisors is an integer number (32802795522).

Almost surely, 2^65605591043 is an apocalyptic number.

65605591043 is a deficient number, since it is larger than the sum of its proper divisors (1).

65605591043 is an equidigital number, since it uses as much as digits as its factorization.

65605591043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 65605591043 in words is "sixty-five billion, six hundred five million, five hundred ninety-one thousand, forty-three".