64775622879 has 12 divisors (see below), whose sum is σ = 102070678632. Its totient is φ = 39257953200.

The previous prime is 64775622841. The next prime is 64775622883. The reversal of 64775622879 is 97822657746.

64775622879 is a `hidden beast` number, since 6 + 47 + 7 + 562 + 28 + 7 + 9 = 666.

It is not a de Polignac number, because 64775622879 - 2¹⁵ = 64775590111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64775621879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327149512 + ... + 327149709.

It is an arithmetic number, because the mean of its divisors is an integer number (8505889886).

Almost surely, 2^64775622879 is an apocalyptic number.

64775622879 is a deficient number, since it is larger than the sum of its proper divisors (37295055753).

64775622879 is a wasteful number, since it uses less digits than its factorization.

64775622879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654299238 (or 654299235 counting only the distinct ones).

The product of its digits is 71124480, while the sum is 63.

The spelling of 64775622879 in words is "sixty-four billion, seven hundred seventy-five million, six hundred twenty-two thousand, eight hundred seventy-nine".