64405513043 has 2 divisors, whose sum is σ = 64405513044. Its totient is φ = 64405513042.

The previous prime is 64405513037. The next prime is 64405513097. The reversal of 64405513043 is 34031550446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64405513043 - 2³⁴ = 47225643859 is a prime.

It is a super-2 number, since 2×64405513043² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 64405512994 and 64405513012.

It is not a weakly prime, because it can be changed into another prime (64405513033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32202756521 + 32202756522.

It is an arithmetic number, because the mean of its divisors is an integer number (32202756522).

Almost surely, 2^64405513043 is an apocalyptic number.

64405513043 is a deficient number, since it is larger than the sum of its proper divisors (1).

64405513043 is an equidigital number, since it uses as much as digits as its factorization.

64405513043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 64405513043 in words is "sixty-four billion, four hundred five million, five hundred thirteen thousand, forty-three".