64354016755769 has 8 divisors (see below), whose sum is σ = 71694130073160. Its totient is φ = 57355304057856.

The previous prime is 64354016755751. The next prime is 64354016755781. The reversal of 64354016755769 is 96755761045346.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 249229369 + 64353767526400 = 15787^2 + 8022080^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64354016755769 - 2²⁴ = 64353999978553 is a prime.

It is a super-2 number, since 2×64354016755769² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64354016755699 and 64354016755708.

It is not an unprimeable number, because it can be changed into a prime (64354016755739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85350154472 + ... + 85350155225.

It is an arithmetic number, because the mean of its divisors is an integer number (8961766259145).

Almost surely, 2^{64354016755769} is an apocalyptic number.

It is an amenable number.

64354016755769 is a deficient number, since it is larger than the sum of its proper divisors (7340113317391).

64354016755769 is a wasteful number, since it uses less digits than its factorization.

64354016755769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170700309739.

The product of its (nonzero) digits is 571536000, while the sum is 68.

The spelling of 64354016755769 in words is "sixty-four trillion, three hundred fifty-four billion, sixteen million, seven hundred fifty-five thousand, seven hundred sixty-nine".