667232841081 has 4 divisors (see below), whose sum is σ = 889643788112. Its totient is φ = 444821894052.

The previous prime is 667232840987. The next prime is 667232841089. The reversal of 667232841081 is 180148232766.

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 667232841081 - 2¹⁴ = 667232824697 is a prime.

It is a super-2 number, since 2×667232841081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 667232841081.

It is not an unprimeable number, because it can be changed into a prime (667232841089) 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, 111205473511 + ... + 111205473516.

It is an arithmetic number, because the mean of its divisors is an integer number (222410947028).

Almost surely, 2^667232841081 is an apocalyptic number.

It is an amenable number.

667232841081 is a deficient number, since it is larger than the sum of its proper divisors (222410947031).

667232841081 is a wasteful number, since it uses less digits than its factorization.

667232841081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222410947030.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 667232841081 in words is "six hundred sixty-seven billion, two hundred thirty-two million, eight hundred forty-one thousand, eighty-one".