64285563919 has 4 divisors (see below), whose sum is σ = 64314124840. Its totient is φ = 64257003000.

The previous prime is 64285563871. The next prime is 64285564027. The reversal of 64285563919 is 91936558246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64285563919 is a prime.

It is a super-2 number, since 2×64285563919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64285561919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14277084 + ... + 14281585.

It is an arithmetic number, because the mean of its divisors is an integer number (16078531210).

Almost surely, 2^64285563919 is an apocalyptic number.

64285563919 is a deficient number, since it is larger than the sum of its proper divisors (28560921).

64285563919 is a wasteful number, since it uses less digits than its factorization.

64285563919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28560920.

The product of its digits is 13996800, while the sum is 58.

The spelling of 64285563919 in words is "sixty-four billion, two hundred eighty-five million, five hundred sixty-three thousand, nine hundred nineteen".