64504085019 has 16 divisors (see below), whose sum is σ = 95109389184. Its totient is φ = 38557857600.

The previous prime is 64504084973. The next prime is 64504085039. The reversal of 64504085019 is 91058040546.

It is not a de Polignac number, because 64504085019 - 2⁹ = 64504084507 is a prime.

It is a super-2 number, since 2×64504085019² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64504085039) 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 in 15 ways as a sum of consecutive naturals, for example, 13385737 + ... + 13390554.

It is an arithmetic number, because the mean of its divisors is an integer number (5944336824).

Almost surely, 2^64504085019 is an apocalyptic number.

64504085019 is a deficient number, since it is larger than the sum of its proper divisors (30605304165).

64504085019 is a wasteful number, since it uses less digits than its factorization.

64504085019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26776378.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 64504085019 in words is "sixty-four billion, five hundred four million, eighty-five thousand, nineteen".