2667040321 has 4 divisors (see below), whose sum is σ = 2909498544. Its totient is φ = 2424582100.

The previous prime is 2667040319. The next prime is 2667040331. The reversal of 2667040321 is 1230407662.

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 2667040321 - 2¹ = 2667040319 is a prime.

It is a super-2 number, since 2×2667040321² = 14226208147679566082, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2667040331) 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, 121229095 + ... + 121229116.

It is an arithmetic number, because the mean of its divisors is an integer number (727374636).

Almost surely, 2^2667040321 is an apocalyptic number.

It is an amenable number.

2667040321 is a deficient number, since it is larger than the sum of its proper divisors (242458223).

2667040321 is a wasteful number, since it uses less digits than its factorization.

2667040321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242458222.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 2667040321 is about 51643.3957152316. The cubic root of 2667040321 is about 1386.7873150375.

Adding to 2667040321 its reverse (1230407662), we get a palindrome (3897447983).

The spelling of 2667040321 in words is "two billion, six hundred sixty-seven million, forty thousand, three hundred twenty-one".