11673640221 has 8 divisors (see below), whose sum is σ = 15569316000. Its totient is φ = 7780195632.

The previous prime is 11673640217. The next prime is 11673640247. The reversal of 11673640221 is 12204637611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11673640221 - 2² = 11673640217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11673640421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545550 + ... + 566543.

It is an arithmetic number, because the mean of its divisors is an integer number (1946164500).

Almost surely, 2^11673640221 is an apocalyptic number.

It is an amenable number.

11673640221 is a deficient number, since it is larger than the sum of its proper divisors (3895675779).

11673640221 is a wasteful number, since it uses less digits than its factorization.

11673640221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115595.

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 11673640221 in words is "eleven billion, six hundred seventy-three million, six hundred forty thousand, two hundred twenty-one".