64804797169 has 12 divisors (see below), whose sum is σ = 77223837348. Its totient is φ = 54192163200.

The previous prime is 64804797163. The next prime is 64804797179. The reversal of 64804797169 is 96179740846.

It can be written as a sum of positive squares in 2 ways, for example, as 14028033600 + 50776763569 = 118440^2 + 225337^2 .

It is not a de Polignac number, because 64804797169 - 2⁷ = 64804797041 is a prime.

It is a super-2 number, since 2×64804797169² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64804797163) 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, 16126612 + ... + 16130629.

It is an arithmetic number, because the mean of its divisors is an integer number (6435319779).

Almost surely, 2^64804797169 is an apocalyptic number.

It is an amenable number.

64804797169 is a deficient number, since it is larger than the sum of its proper divisors (12419040179).

64804797169 is a wasteful number, since it uses less digits than its factorization.

64804797169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32257296 (or 32257289 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 64804797169 in words is "sixty-four billion, eight hundred four million, seven hundred ninety-seven thousand, one hundred sixty-nine".