64546765823128 has 16 divisors (see below), whose sum is σ = 121051802477880. Its totient is φ = 32266285162368.

The previous prime is 64546765823119. The next prime is 64546765823131. The reversal of 64546765823128 is 82132856764546.

64546765823128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 887180001 + ... + 887252752.

Almost surely, 2^{64546765823128} is an apocalyptic number.

It is an amenable number.

64546765823128 is a deficient number, since it is larger than the sum of its proper divisors (56505036654752).

64546765823128 is a wasteful number, since it uses less digits than its factorization.

64546765823128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774437306 (or 1774437302 counting only the distinct ones).

The product of its digits is 464486400, while the sum is 67.

The spelling of 64546765823128 in words is "sixty-four trillion, five hundred forty-six billion, seven hundred sixty-five million, eight hundred twenty-three thousand, one hundred twenty-eight".