64319428109 has 4 divisors (see below), whose sum is σ = 64378600704. Its totient is φ = 64260255516.

The previous prime is 64319428093. The next prime is 64319428111. The reversal of 64319428109 is 90182491346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64319428109 - 2⁴ = 64319428093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64319428009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29584667 + ... + 29586840.

It is an arithmetic number, because the mean of its divisors is an integer number (16094650176).

Almost surely, 2^64319428109 is an apocalyptic number.

It is an amenable number.

64319428109 is a deficient number, since it is larger than the sum of its proper divisors (59172595).

64319428109 is a wasteful number, since it uses less digits than its factorization.

64319428109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59172594.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 64319428109 in words is "sixty-four billion, three hundred nineteen million, four hundred twenty-eight thousand, one hundred nine".