64770648366 has 32 divisors (see below), whose sum is σ = 131720752800. Its totient is φ = 21229655040.

The previous prime is 64770648361. The next prime is 64770648379. The reversal of 64770648366 is 66384607746.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64770648361) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 238411 + ... + 431718.

It is an arithmetic number, because the mean of its divisors is an integer number (4116273525).

Almost surely, 2^64770648366 is an apocalyptic number.

64770648366 is an abundant number, since it is smaller than the sum of its proper divisors (66950104434).

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

64770648366 is a wasteful number, since it uses less digits than its factorization.

64770648366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670404.

The product of its (nonzero) digits is 24385536, while the sum is 57.

The spelling of 64770648366 in words is "sixty-four billion, seven hundred seventy million, six hundred forty-eight thousand, three hundred sixty-six".