64881043376684 has 12 divisors (see below), whose sum is σ = 113572537816584. Its totient is φ = 32431746857664.

The previous prime is 64881043376651. The next prime is 64881043376701. The reversal of 64881043376684 is 48667334018846.

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2193691034 + ... + 2193720609.

It is an arithmetic number, because the mean of its divisors is an integer number (9464378151382).

Almost surely, 2^{64881043376684} is an apocalyptic number.

It is an amenable number.

64881043376684 is a deficient number, since it is larger than the sum of its proper divisors (48691494439900).

64881043376684 is a wasteful number, since it uses less digits than its factorization.

64881043376684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387415344 (or 4387415342 counting only the distinct ones).

The product of its (nonzero) digits is 445906944, while the sum is 68.

The spelling of 64881043376684 in words is "sixty-four trillion, eight hundred eighty-one billion, forty-three million, three hundred seventy-six thousand, six hundred eighty-four".