64126657107 has 12 divisors (see below), whose sum is σ = 92647949680. Its totient is φ = 42741617328.

The previous prime is 64126657057. The next prime is 64126657159. The reversal of 64126657107 is 70175662146.

64126657107 is a `hidden beast` number, since 6 + 4 + 12 + 66 + 571 + 0 + 7 = 666.

It is not a de Polignac number, because 64126657107 - 2⁶ = 64126657043 is a prime.

It is a super-3 number, since 3×64126657107³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64126657607) 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, 747688 + ... + 829029.

Almost surely, 2^64126657107 is an apocalyptic number.

64126657107 is a deficient number, since it is larger than the sum of its proper divisors (28521292573).

64126657107 is a wasteful number, since it uses less digits than its factorization.

64126657107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581242 (or 1581239 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 64126657107 in words is "sixty-four billion, one hundred twenty-six million, six hundred fifty-seven thousand, one hundred seven".