64866046866 has 16 divisors (see below), whose sum is σ = 129734589600. Its totient is φ = 21621599648.

The previous prime is 64866046841. The next prime is 64866046897. The reversal of 64866046866 is 66864066846.

It is a happy number.

It is an unprimeable number.

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, 559390 + ... + 665318.

It is an arithmetic number, because the mean of its divisors is an integer number (8108411850).

Almost surely, 2^64866046866 is an apocalyptic number.

64866046866 is an abundant number, since it is smaller than the sum of its proper divisors (64868542734).

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

64866046866 is a wasteful number, since it uses less digits than its factorization.

64866046866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207993.

The product of its (nonzero) digits is 47775744, while the sum is 60.

The spelling of 64866046866 in words is "sixty-four billion, eight hundred sixty-six million, forty-six thousand, eight hundred sixty-six".