64895641601104 has 30 divisors (see below), whose sum is σ = 129922121220090. Its totient is φ = 31401116896320.

The previous prime is 64895641601099. The next prime is 64895641601107. The reversal of 64895641601104 is 40110614659846.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49275345729600 + 15620295871504 = 7019640^2 + 3952252^2 .

It is a super-2 number, since 2×64895641601104² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64895641601107) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2110274739 + ... + 2110305490.

It is an arithmetic number, because the mean of its divisors is an integer number (4330737374003).

Almost surely, 2^{64895641601104} is an apocalyptic number.

It is an amenable number.

64895641601104 is an abundant number, since it is smaller than the sum of its proper divisors (65026479618986).

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

64895641601104 is a wasteful number, since it uses less digits than its factorization.

64895641601104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220580299 (or 4220580262 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 64895641601104 in words is "sixty-four trillion, eight hundred ninety-five billion, six hundred forty-one million, six hundred one thousand, one hundred four".