64394445135 has 8 divisors (see below), whose sum is σ = 103031112240. Its totient is φ = 34343704064.

The previous prime is 64394445127. The next prime is 64394445139. The reversal of 64394445135 is 53154449346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64394445135 - 2³ = 64394445127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64394445139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2146481490 + ... + 2146481519.

It is an arithmetic number, because the mean of its divisors is an integer number (12878889030).

Almost surely, 2^64394445135 is an apocalyptic number.

64394445135 is a deficient number, since it is larger than the sum of its proper divisors (38636667105).

64394445135 is a wasteful number, since it uses less digits than its factorization.

64394445135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292963017.

The product of its digits is 3110400, while the sum is 48.

The spelling of 64394445135 in words is "sixty-four billion, three hundred ninety-four million, four hundred forty-five thousand, one hundred thirty-five".