64775622880 has 24 divisors (see below), whose sum is σ = 153032409432. Its totient is φ = 25910249088.

The previous prime is 64775622841. The next prime is 64775622883. The reversal of 64775622880 is 8822657746.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64775622883) 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 3 ways as a sum of consecutive naturals, for example, 202423662 + ... + 202423981.

It is an arithmetic number, because the mean of its divisors is an integer number (6376350393).

Almost surely, 2^64775622880 is an apocalyptic number.

It is an amenable number.

64775622880 is an abundant number, since it is smaller than the sum of its proper divisors (88256786552).

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

64775622880 is a wasteful number, since it uses less digits than its factorization.

64775622880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404847658 (or 404847650 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 64775622880 in words is "sixty-four billion, seven hundred seventy-five million, six hundred twenty-two thousand, eight hundred eighty".