11667773863821 has 8 divisors (see below), whose sum is σ = 15717413590144. Its totient is φ = 7698325023360.

The previous prime is 11667773863793. The next prime is 11667773863841. The reversal of 11667773863821 is 12836837776611.

11667773863821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11667773863821 - 2¹⁴ = 11667773847437 is a prime.

It is a super-2 number, since 2×11667773863821² (a number of 27 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 (11667773863841) 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, 20047721125 + ... + 20047721706.

It is an arithmetic number, because the mean of its divisors is an integer number (1964676698768).

Almost surely, 2^{11667773863821} is an apocalyptic number.

It is an amenable number.

11667773863821 is a deficient number, since it is larger than the sum of its proper divisors (4049639726323).

11667773863821 is an equidigital number, since it uses as much as digits as its factorization.

11667773863821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40095442931.

The product of its digits is 85349376, while the sum is 66.

The spelling of 11667773863821 in words is "eleven trillion, six hundred sixty-seven billion, seven hundred seventy-three million, eight hundred sixty-three thousand, eight hundred twenty-one".