664174145733 has 32 divisors (see below), whose sum is σ = 1090145206272. Its totient is φ = 351316310400.

The previous prime is 664174145669. The next prime is 664174145773. The reversal of 664174145733 is 337541471466.

It is a happy number.

664174145733 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664174145733 - 2⁶ = 664174145669 is a prime.

It is a super-2 number, since 2×664174145733² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664174145773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22164088 + ... + 22194033.

It is an arithmetic number, because the mean of its divisors is an integer number (34067037696).

Almost surely, 2^664174145733 is an apocalyptic number.

It is an amenable number.

664174145733 is a deficient number, since it is larger than the sum of its proper divisors (425971060539).

664174145733 is a wasteful number, since it uses less digits than its factorization.

664174145733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44358185.

The product of its digits is 5080320, while the sum is 51.

The spelling of 664174145733 in words is "six hundred sixty-four billion, one hundred seventy-four million, one hundred forty-five thousand, seven hundred thirty-three".