20344316451663 has 8 divisors (see below), whose sum is σ = 27157407262128. Its totient is φ = 13547051637824.

The previous prime is 20344316451637. The next prime is 20344316451709. The reversal of 20344316451663 is 36615461344302.

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 20344316451663 - 2¹³ = 20344316443471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344316451863) 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, 3956496156 + ... + 3956501297.

It is an arithmetic number, because the mean of its divisors is an integer number (3394675907766).

Almost surely, 2^{20344316451663} is an apocalyptic number.

20344316451663 is a deficient number, since it is larger than the sum of its proper divisors (6813090810465).

20344316451663 is an equidigital number, since it uses as much as digits as its factorization.

20344316451663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7912998313.

The product of its (nonzero) digits is 3732480, while the sum is 48.

Adding to 20344316451663 its reverse (36615461344302), we get a palindrome (56959777795965).

It can be divided in two parts, 203443 and 16451663, that added together give a triangular number (16655106 = T₅₇₇₁).

The spelling of 20344316451663 in words is "twenty trillion, three hundred forty-four billion, three hundred sixteen million, four hundred fifty-one thousand, six hundred sixty-three".