20650634363 has 4 divisors (see below), whose sum is σ = 20705998368. Its totient is φ = 20595270360.

The previous prime is 20650634359. The next prime is 20650634423. The reversal of 20650634363 is 36343605602.

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

It is a cyclic number.

It is not a de Polignac number, because 20650634363 - 2² = 20650634359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20650634863) 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 3 ways as a sum of consecutive naturals, for example, 27681443 + ... + 27682188.

It is an arithmetic number, because the mean of its divisors is an integer number (5176499592).

Almost surely, 2^20650634363 is an apocalyptic number.

20650634363 is a deficient number, since it is larger than the sum of its proper divisors (55364005).

20650634363 is an equidigital number, since it uses as much as digits as its factorization.

20650634363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55364004.

The product of its (nonzero) digits is 233280, while the sum is 38.

The spelling of 20650634363 in words is "twenty billion, six hundred fifty million, six hundred thirty-four thousand, three hundred sixty-three".