664862405133 has 4 divisors (see below), whose sum is σ = 886483206848. Its totient is φ = 443241603420.

The previous prime is 664862405107. The next prime is 664862405189. The reversal of 664862405133 is 331504268466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 664862405133 - 2¹³ = 664862396941 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 (664862505133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110810400853 + ... + 110810400858.

It is an arithmetic number, because the mean of its divisors is an integer number (221620801712).

Almost surely, 2^664862405133 is an apocalyptic number.

It is an amenable number.

664862405133 is a deficient number, since it is larger than the sum of its proper divisors (221620801715).

664862405133 is a wasteful number, since it uses less digits than its factorization.

664862405133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221620801714.

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 664862405133 in words is "six hundred sixty-four billion, eight hundred sixty-two million, four hundred five thousand, one hundred thirty-three".