20650612330655 has 4 divisors (see below), whose sum is σ = 24780734796792. Its totient is φ = 16520489864520.

The previous prime is 20650612330637. The next prime is 20650612330661. The reversal of 20650612330655 is 55603321605602.

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

It is not a de Polignac number, because 20650612330655 - 2¹⁶ = 20650612265119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2065061233061 + ... + 2065061233070.

It is an arithmetic number, because the mean of its divisors is an integer number (6195183699198).

Almost surely, 2^{20650612330655} is an apocalyptic number.

20650612330655 is a deficient number, since it is larger than the sum of its proper divisors (4130122466137).

20650612330655 is an equidigital number, since it uses as much as digits as its factorization.

20650612330655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4130122466136.

The product of its (nonzero) digits is 972000, while the sum is 44.

The spelling of 20650612330655 in words is "twenty trillion, six hundred fifty billion, six hundred twelve million, three hundred thirty thousand, six hundred fifty-five".