64019606369 has 4 divisors (see below), whose sum is σ = 64025948160. Its totient is φ = 64013264580.

The previous prime is 64019606351. The next prime is 64019606429. The reversal of 64019606369 is 96360691046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64019606369 is a prime.

It is a super-2 number, since 2×64019606369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64019606269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3155729 + ... + 3175950.

It is an arithmetic number, because the mean of its divisors is an integer number (16006487040).

Almost surely, 2^64019606369 is an apocalyptic number.

It is an amenable number.

64019606369 is a deficient number, since it is larger than the sum of its proper divisors (6341791).

64019606369 is a wasteful number, since it uses less digits than its factorization.

64019606369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6341790.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The spelling of 64019606369 in words is "sixty-four billion, nineteen million, six hundred six thousand, three hundred sixty-nine".