64817100043 has 2 divisors, whose sum is σ = 64817100044. Its totient is φ = 64817100042.

The previous prime is 64817100041. The next prime is 64817100067. The reversal of 64817100043 is 34000171846.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64817100043 - 2¹ = 64817100041 is a prime.

Together with 64817100041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 64817099981 and 64817100008.

It is not a weakly prime, because it can be changed into another prime (64817100041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32408550021 + 32408550022.

It is an arithmetic number, because the mean of its divisors is an integer number (32408550022).

Almost surely, 2^64817100043 is an apocalyptic number.

64817100043 is a deficient number, since it is larger than the sum of its proper divisors (1).

64817100043 is an equidigital number, since it uses as much as digits as its factorization.

64817100043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

Adding to 64817100043 its reverse (34000171846), we get a palindrome (98817271889).

The spelling of 64817100043 in words is "sixty-four billion, eight hundred seventeen million, one hundred thousand, forty-three".