64109039109 has 16 divisors (see below), whose sum is σ = 88468363200. Its totient is φ = 41245940736.

The previous prime is 64109039101. The next prime is 64109039119. The reversal of 64109039109 is 90193090146.

64109039109 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 64109039109 - 2³ = 64109039101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64109039101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9462 + ... + 358200.

It is an arithmetic number, because the mean of its divisors is an integer number (5529272700).

Almost surely, 2^64109039109 is an apocalyptic number.

It is an amenable number.

64109039109 is a deficient number, since it is larger than the sum of its proper divisors (24359324091).

64109039109 is a wasteful number, since it uses less digits than its factorization.

64109039109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350884.

The product of its (nonzero) digits is 52488, while the sum is 42.

The spelling of 64109039109 in words is "sixty-four billion, one hundred nine million, thirty-nine thousand, one hundred nine".