64081770019 has 2 divisors, whose sum is σ = 64081770020. Its totient is φ = 64081770018.

The previous prime is 64081770007. The next prime is 64081770073. The reversal of 64081770019 is 91007718046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64081770019 - 2¹⁷ = 64081638947 is a prime.

It is a super-2 number, since 2×64081770019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64081770719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32040885009 + 32040885010.

It is an arithmetic number, because the mean of its divisors is an integer number (32040885010).

Almost surely, 2^64081770019 is an apocalyptic number.

64081770019 is a deficient number, since it is larger than the sum of its proper divisors (1).

64081770019 is an equidigital number, since it uses as much as digits as its factorization.

64081770019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 43.

The spelling of 64081770019 in words is "sixty-four billion, eighty-one million, seven hundred seventy thousand, nineteen".