64145604533107 has 4 divisors (see below), whose sum is σ = 64150493320296. Its totient is φ = 64140715745920.

The previous prime is 64145604533099. The next prime is 64145604533111. The reversal of 64145604533107 is 70133540654146.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64145604533107 - 2³ = 64145604533099 is a prime.

It is a super-2 number, since 2×64145604533107² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64145604933107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2444373913 + ... + 2444400154.

It is an arithmetic number, because the mean of its divisors is an integer number (16037623330074).

Almost surely, 2^{64145604533107} is an apocalyptic number.

64145604533107 is a deficient number, since it is larger than the sum of its proper divisors (4888787189).

64145604533107 is a wasteful number, since it uses less digits than its factorization.

64145604533107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4888787188.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 64145604533107 in words is "sixty-four trillion, one hundred forty-five billion, six hundred four million, five hundred thirty-three thousand, one hundred seven".