664167466141 has 4 divisors (see below), whose sum is σ = 664183545984. Its totient is φ = 664151386300.

The previous prime is 664167466117. The next prime is 664167466159. The reversal of 664167466141 is 141664761466.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 664167466141 - 2⁷ = 664167466013 is a prime.

It is a super-2 number, since 2×664167466141² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664167416141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7977805 + ... + 8060626.

It is an arithmetic number, because the mean of its divisors is an integer number (166045886496).

Almost surely, 2^664167466141 is an apocalyptic number.

It is an amenable number.

664167466141 is a deficient number, since it is larger than the sum of its proper divisors (16079843).

664167466141 is a wasteful number, since it uses less digits than its factorization.

664167466141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16079842.

The product of its digits is 3483648, while the sum is 52.

The spelling of 664167466141 in words is "six hundred sixty-four billion, one hundred sixty-seven million, four hundred sixty-six thousand, one hundred forty-one".