64418457619 has 2 divisors, whose sum is σ = 64418457620. Its totient is φ = 64418457618.

The previous prime is 64418457577. The next prime is 64418457637. The reversal of 64418457619 is 91675481446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64418457619 - 2¹⁷ = 64418326547 is a prime.

It is a super-2 number, since 2×64418457619² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64418457619.

It is not a weakly prime, because it can be changed into another prime (64418457919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32209228809 + 32209228810.

It is an arithmetic number, because the mean of its divisors is an integer number (32209228810).

Almost surely, 2^64418457619 is an apocalyptic number.

64418457619 is a deficient number, since it is larger than the sum of its proper divisors (1).

64418457619 is an equidigital number, since it uses as much as digits as its factorization.

64418457619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 55.

The spelling of 64418457619 in words is "sixty-four billion, four hundred eighteen million, four hundred fifty-seven thousand, six hundred nineteen".