664004155111 has 16 divisors (see below), whose sum is σ = 730372953888. Its totient is φ = 598653568000.

The previous prime is 664004155097. The next prime is 664004155127. The reversal of 664004155111 is 111551400466.

It is a cyclic number.

It is not a de Polignac number, because 664004155111 - 2²³ = 663995766503 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 (664004155181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328035 + ... + 1198171.

It is an arithmetic number, because the mean of its divisors is an integer number (45648309618).

Almost surely, 2^664004155111 is an apocalyptic number.

664004155111 is a deficient number, since it is larger than the sum of its proper divisors (66368798777).

664004155111 is a wasteful number, since it uses less digits than its factorization.

664004155111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870722.

The product of its (nonzero) digits is 14400, while the sum is 34.

Adding to 664004155111 its reverse (111551400466), we get a palindrome (775555555577).

The spelling of 664004155111 in words is "six hundred sixty-four billion, four million, one hundred fifty-five thousand, one hundred eleven".