21230606013673 has 8 divisors (see below), whose sum is σ = 24263858581760. Its totient is φ = 18197430658560.

The previous prime is 21230606013653. The next prime is 21230606013677. The reversal of 21230606013673 is 37631060603212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21230606013673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21230606013677) 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, 18712833 + ... + 19814926.

It is an arithmetic number, because the mean of its divisors is an integer number (3032982322720).

Almost surely, 2^{21230606013673} is an apocalyptic number.

It is an amenable number.

21230606013673 is a deficient number, since it is larger than the sum of its proper divisors (3033252568087).

21230606013673 is an equidigital number, since it uses as much as digits as its factorization.

21230606013673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38606487.

The product of its (nonzero) digits is 163296, while the sum is 40.

Adding to 21230606013673 its reverse (37631060603212), we get a palindrome (58861666616885).

The spelling of 21230606013673 in words is "twenty-one trillion, two hundred thirty billion, six hundred six million, thirteen thousand, six hundred seventy-three".