64826656338 has 16 divisors (see below), whose sum is σ = 129830201856. Its totient is φ = 21579403920.

The previous prime is 64826656313. The next prime is 64826656381. The reversal of 64826656338 is 83365662846.

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, 7365618 + ... + 7374413.

It is an arithmetic number, because the mean of its divisors is an integer number (8114387616).

Almost surely, 2^64826656338 is an apocalyptic number.

64826656338 is an abundant number, since it is smaller than the sum of its proper divisors (65003545518).

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

64826656338 is a wasteful number, since it uses less digits than its factorization.

64826656338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14740769.

The product of its digits is 29859840, while the sum is 57.

It can be divided in two parts, 6482665 and 6338, that added together give a triangular number (6489003 = T₃₆₀₂).

The spelling of 64826656338 in words is "sixty-four billion, eight hundred twenty-six million, six hundred fifty-six thousand, three hundred thirty-eight".