20663153246 has 8 divisors (see below), whose sum is σ = 31015085544. Its totient is φ = 10324791400.

The previous prime is 20663153243. The next prime is 20663153249. The reversal of 20663153246 is 64235136602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20663153243) and next prime (20663153249).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20663153243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3388805 + ... + 3394896.

It is an arithmetic number, because the mean of its divisors is an integer number (3876885693).

Almost surely, 2^20663153246 is an apocalyptic number.

20663153246 is a deficient number, since it is larger than the sum of its proper divisors (10351932298).

20663153246 is a wasteful number, since it uses less digits than its factorization.

20663153246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6785226.

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 20663153246 its reverse (64235136602), we get a palindrome (84898289848).

The spelling of 20663153246 in words is "twenty billion, six hundred sixty-three million, one hundred fifty-three thousand, two hundred forty-six".