64020194027019 has 16 divisors (see below), whose sum is σ = 94896082659840. Its totient is φ = 42657021505800.

The previous prime is 64020194027003. The next prime is 64020194027071. The reversal of 64020194027019 is 91072049102046.

It is not a de Polignac number, because 64020194027019 - 2⁴ = 64020194027003 is a prime.

It is a super-2 number, since 2×64020194027019² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64020194027089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641833807 + ... + 641933544.

It is an arithmetic number, because the mean of its divisors is an integer number (5931005166240).

Almost surely, 2^{64020194027019} is an apocalyptic number.

64020194027019 is a deficient number, since it is larger than the sum of its proper divisors (30875888632821).

64020194027019 is a wasteful number, since it uses less digits than its factorization.

64020194027019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283769207 (or 1283769201 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 64020194027019 in words is "sixty-four trillion, twenty billion, one hundred ninety-four million, twenty-seven thousand, nineteen".