64838357377055 has 12 divisors (see below), whose sum is σ = 80581511456472. Its totient is φ = 50082041556960.

The previous prime is 64838357376979. The next prime is 64838357377093. The reversal of 64838357377055 is 55077375383846.

64838357377055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64838357377055 - 2³² = 64834062409759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64838357377055.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 7709669681 + ... + 7709678090.

It is an arithmetic number, because the mean of its divisors is an integer number (6715125954706).

Almost surely, 2^{64838357377055} is an apocalyptic number.

64838357377055 is a deficient number, since it is larger than the sum of its proper divisors (15743154079417).

64838357377055 is a wasteful number, since it uses less digits than its factorization.

64838357377055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15419347834 (or 15419347805 counting only the distinct ones).

The product of its (nonzero) digits is 1778112000, while the sum is 71.

The spelling of 64838357377055 in words is "sixty-four trillion, eight hundred thirty-eight billion, three hundred fifty-seven million, three hundred seventy-seven thousand, fifty-five".