64424509417 has 2 divisors, whose sum is σ = 64424509418. Its totient is φ = 64424509416.

The previous prime is 64424509399. The next prime is 64424509451. The reversal of 64424509417 is 71490542446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51742145961 + 12682363456 = 227469^2 + 112616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64424509417 is a prime.

It is a super-2 number, since 2×64424509417² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64424509117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32212254708 + 32212254709.

It is an arithmetic number, because the mean of its divisors is an integer number (32212254709).

Almost surely, 2^64424509417 is an apocalyptic number.

It is an amenable number.

64424509417 is a deficient number, since it is larger than the sum of its proper divisors (1).

64424509417 is an equidigital number, since it uses as much as digits as its factorization.

64424509417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 64424509417 in words is "sixty-four billion, four hundred twenty-four million, five hundred nine thousand, four hundred seventeen".