64811681686762 has 16 divisors (see below), whose sum is σ = 97626824817984. Its totient is φ = 32269464900000.

The previous prime is 64811681686751. The next prime is 64811681686789. The reversal of 64811681686762 is 26768618611846.

64811681686762 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64811681686691 and 64811681686700.

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 7 ways as a sum of consecutive naturals, for example, 12306414 + ... + 16765177.

It is an arithmetic number, because the mean of its divisors is an integer number (6101676551124).

Almost surely, 2^{64811681686762} is an apocalyptic number.

64811681686762 is a deficient number, since it is larger than the sum of its proper divisors (32815143131222).

64811681686762 is a wasteful number, since it uses less digits than its factorization.

64811681686762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29076285.

The product of its digits is 222953472, while the sum is 70.

The spelling of 64811681686762 in words is "sixty-four trillion, eight hundred eleven billion, six hundred eighty-one million, six hundred eighty-six thousand, seven hundred sixty-two".