20342202663 has 4 divisors (see below), whose sum is σ = 27122936888. Its totient is φ = 13561468440.

The previous prime is 20342202649. The next prime is 20342202677. The reversal of 20342202663 is 36620224302.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20342202649) and next prime (20342202677).

It is not a de Polignac number, because 20342202663 - 2¹⁰ = 20342201639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20342202663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342212663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3390367108 + ... + 3390367113.

It is an arithmetic number, because the mean of its divisors is an integer number (6780734222).

Almost surely, 2^20342202663 is an apocalyptic number.

20342202663 is a deficient number, since it is larger than the sum of its proper divisors (6780734225).

20342202663 is an equidigital number, since it uses as much as digits as its factorization.

20342202663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780734224.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 20342202663 its reverse (36620224302), we get a palindrome (56962426965).

The spelling of 20342202663 in words is "twenty billion, three hundred forty-two million, two hundred two thousand, six hundred sixty-three".