64128880107 has 24 divisors (see below), whose sum is σ = 95829447168. Its totient is φ = 41296848000.

The previous prime is 64128880093. The next prime is 64128880217. The reversal of 64128880107 is 70108882146.

It is not a de Polignac number, because 64128880107 - 2⁸ = 64128879851 is a prime.

It is a super-2 number, since 2×64128880107² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64128882107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 823083 + ... + 897620.

It is an arithmetic number, because the mean of its divisors is an integer number (3992893632).

Almost surely, 2^64128880107 is an apocalyptic number.

64128880107 is a deficient number, since it is larger than the sum of its proper divisors (31700567061).

64128880107 is a wasteful number, since it uses less digits than its factorization.

64128880107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720851 (or 1720848 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 64128880107 in words is "sixty-four billion, one hundred twenty-eight million, eight hundred eighty thousand, one hundred seven".