64985257107 has 24 divisors (see below), whose sum is σ = 96481409024. Its totient is φ = 42126167664.

The previous prime is 64985257049. The next prime is 64985257151. The reversal of 64985257107 is 70175258946.

64985257107 is a `hidden beast` number, since 6 + 4 + 9 + 8 + 525 + 7 + 107 = 666.

It is not a de Polignac number, because 64985257107 - 2⁷ = 64985256979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64985257907) 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 23 ways as a sum of consecutive naturals, for example, 290203 + ... + 462804.

Almost surely, 2^64985257107 is an apocalyptic number.

64985257107 is a deficient number, since it is larger than the sum of its proper divisors (31496151917).

64985257107 is a wasteful number, since it uses less digits than its factorization.

64985257107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753279 (or 753276 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 64985257107 in words is "sixty-four billion, nine hundred eighty-five million, two hundred fifty-seven thousand, one hundred seven".