64145165323 has 8 divisors (see below), whose sum is σ = 67925457792. Its totient is φ = 60365655936.

The previous prime is 64145165299. The next prime is 64145165339. The reversal of 64145165323 is 32356154146.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64145165323 is a prime.

It is a super-2 number, since 2×64145165323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64145165423) 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, 22740 + ... + 358897.

It is an arithmetic number, because the mean of its divisors is an integer number (8490682224).

Almost surely, 2^64145165323 is an apocalyptic number.

64145165323 is a deficient number, since it is larger than the sum of its proper divisors (3780292469).

64145165323 is a wasteful number, since it uses less digits than its factorization.

64145165323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391541.

The product of its digits is 259200, while the sum is 40.

The spelling of 64145165323 in words is "sixty-four billion, one hundred forty-five million, one hundred sixty-five thousand, three hundred twenty-three".