64129183406865 has 48 divisors (see below), whose sum is σ = 115302497401728. Its totient is φ = 34193831204736.

The previous prime is 64129183406843. The next prime is 64129183406903. The reversal of 64129183406865 is 56860438192146.

64129183406865 is a `hidden beast` number, since 6 + 4 + 1 + 2 + 91 + 83 + 406 + 8 + 65 = 666.

64129183406865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64129183406865 - 2¹⁸ = 64129183144721 is a prime.

It is a super-2 number, since 2×64129183406865² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1530709 + ... + 11428098.

It is an arithmetic number, because the mean of its divisors is an integer number (2402135362536).

Almost surely, 2^{64129183406865} is an apocalyptic number.

It is an amenable number.

64129183406865 is a deficient number, since it is larger than the sum of its proper divisors (51173313994863).

64129183406865 is a wasteful number, since it uses less digits than its factorization.

64129183406865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12962900 (or 12962888 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 63.

The spelling of 64129183406865 in words is "sixty-four trillion, one hundred twenty-nine billion, one hundred eighty-three million, four hundred six thousand, eight hundred sixty-five".