21103156766233 has 8 divisors (see below), whose sum is σ = 21155553957888. Its totient is φ = 21050776442304.

The previous prime is 21103156766191. The next prime is 21103156766243. The reversal of 21103156766233 is 33266765130112.

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-21103156766233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21103156766243) 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, 1709785 + ... + 6717862.

It is an arithmetic number, because the mean of its divisors is an integer number (2644444244736).

Almost surely, 2^{21103156766233} is an apocalyptic number.

It is an amenable number.

21103156766233 is a deficient number, since it is larger than the sum of its proper divisors (52397191655).

21103156766233 is an equidigital number, since it uses as much as digits as its factorization.

21103156766233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8433863.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 21103156766233 in words is "twenty-one trillion, one hundred three billion, one hundred fifty-six million, seven hundred sixty-six thousand, two hundred thirty-three".