64785768076 has 24 divisors (see below), whose sum is σ = 114780649536. Its totient is φ = 31993127760.

The previous prime is 64785768037. The next prime is 64785768079. The reversal of 64785768076 is 67086758746.

It is a junction number, because it is equal to n+sod(n) for n = 64785767999 and 64785768017.

It is not an unprimeable number, because it can be changed into a prime (64785768079) 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, 86986 + ... + 370321.

It is an arithmetic number, because the mean of its divisors is an integer number (4782527064).

Almost surely, 2^64785768076 is an apocalyptic number.

It is an amenable number.

64785768076 is a deficient number, since it is larger than the sum of its proper divisors (49994881460).

64785768076 is a wasteful number, since it uses less digits than its factorization.

64785768076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457749 (or 457747 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 64.

The spelling of 64785768076 in words is "sixty-four billion, seven hundred eighty-five million, seven hundred sixty-eight thousand, seventy-six".