20156330705663 has 8 divisors (see below), whose sum is σ = 20192378802960. Its totient is φ = 20120290948800.

The previous prime is 20156330705659. The next prime is 20156330705689. The reversal of 20156330705663 is 36650703365102.

It is a happy number.

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 20156330705663 - 2² = 20156330705659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20156330705633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2762681 + ... + 6924237.

It is an arithmetic number, because the mean of its divisors is an integer number (2524047350370).

Almost surely, 2^{20156330705663} is an apocalyptic number.

20156330705663 is a deficient number, since it is larger than the sum of its proper divisors (36048097297).

20156330705663 is an equidigital number, since it uses as much as digits as its factorization.

20156330705663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170217.

The product of its (nonzero) digits is 2041200, while the sum is 47.

The spelling of 20156330705663 in words is "twenty trillion, one hundred fifty-six billion, three hundred thirty million, seven hundred five thousand, six hundred sixty-three".