531676668673 has 4 divisors (see below), whose sum is σ = 531678551040. Its totient is φ = 531674786308.

The previous prime is 531676668667. The next prime is 531676668683. The reversal of 531676668673 is 376866676135.

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, and also an emirpimes, since its reverse is a distinct semiprime: 376866676135 = 5 ⋅75373335227.

It is a cyclic number.

It is not a de Polignac number, because 531676668673 - 2²⁹ = 531139797761 is a prime.

It is a super-2 number, since 2×531676668673² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531676668613) 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, 422065 + ... + 1114222.

It is an arithmetic number, because the mean of its divisors is an integer number (132919637760).

Almost surely, 2^531676668673 is an apocalyptic number.

It is an amenable number.

531676668673 is a deficient number, since it is larger than the sum of its proper divisors (1882367).

531676668673 is a wasteful number, since it uses less digits than its factorization.

531676668673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882366.

The product of its digits is 137168640, while the sum is 64.

The spelling of 531676668673 in words is "five hundred thirty-one billion, six hundred seventy-six million, six hundred sixty-eight thousand, six hundred seventy-three".