64857324646 has 16 divisors (see below), whose sum is σ = 98821282464. Its totient is φ = 31918722624.

The previous prime is 64857324607. The next prime is 64857324793. The reversal of 64857324646 is 64642375846.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 384985 + ... + 527188.

It is an arithmetic number, because the mean of its divisors is an integer number (6176330154).

Almost surely, 2^64857324646 is an apocalyptic number.

64857324646 is a deficient number, since it is larger than the sum of its proper divisors (33963957818).

64857324646 is a wasteful number, since it uses less digits than its factorization.

64857324646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912735.

The product of its digits is 23224320, while the sum is 55.

The spelling of 64857324646 in words is "sixty-four billion, eight hundred fifty-seven million, three hundred twenty-four thousand, six hundred forty-six".