20910866830633 has 8 divisors (see below), whose sum is σ = 23498499181248. Its totient is φ = 18463106499024.

The previous prime is 20910866830627. The next prime is 20910866830649. The reversal of 20910866830633 is 33603866801902.

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

It is a cyclic number.

It is not a de Polignac number, because 20910866830633 - 2¹³ = 20910866822441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20910866830613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34968004435 + ... + 34968005032.

It is an arithmetic number, because the mean of its divisors is an integer number (2937312397656).

Almost surely, 2^{20910866830633} is an apocalyptic number.

20910866830633 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20910866830633 is a deficient number, since it is larger than the sum of its proper divisors (2587632350615).

20910866830633 is a wasteful number, since it uses less digits than its factorization.

20910866830633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69936009503.

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 20910866830633 in words is "twenty trillion, nine hundred ten billion, eight hundred sixty-six million, eight hundred thirty thousand, six hundred thirty-three".