64808646804 has 96 divisors (see below), whose sum is σ = 183362659200. Its totient is φ = 19631969280.

The previous prime is 64808646803. The next prime is 64808646839. The reversal of 64808646804 is 40864680846.

64808646804 is a `hidden beast` number, since 6 + 480 + 86 + 4 + 6 + 80 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64808646803) 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 31 ways as a sum of consecutive naturals, for example, 4018084 + ... + 4034180.

It is an arithmetic number, because the mean of its divisors is an integer number (1910027700).

Almost surely, 2^64808646804 is an apocalyptic number.

It is an amenable number.

64808646804 is an abundant number, since it is smaller than the sum of its proper divisors (118554012396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64808646804 is a wasteful number, since it uses less digits than its factorization.

64808646804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19510 (or 19502 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 54.

The spelling of 64808646804 in words is "sixty-four billion, eight hundred eight million, six hundred forty-six thousand, eight hundred four".