64963554809 has 8 divisors (see below), whose sum is σ = 71775590400. Its totient is φ = 58483813696.

The previous prime is 64963554779. The next prime is 64963554857. The reversal of 64963554809 is 90845536946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64963554809 - 2¹⁶ = 64963489273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64963556809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83073209 + ... + 83073990.

It is an arithmetic number, because the mean of its divisors is an integer number (8971948800).

Almost surely, 2^64963554809 is an apocalyptic number.

It is an amenable number.

64963554809 is a deficient number, since it is larger than the sum of its proper divisors (6812035591).

64963554809 is a wasteful number, since it uses less digits than its factorization.

64963554809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166147239.

The product of its (nonzero) digits is 27993600, while the sum is 59.

The spelling of 64963554809 in words is "sixty-four billion, nine hundred sixty-three million, five hundred fifty-four thousand, eight hundred nine".