20635446323 has 4 divisors (see below), whose sum is σ = 20742365928. Its totient is φ = 20528526720.

The previous prime is 20635446313. The next prime is 20635446361. The reversal of 20635446323 is 32364453602.

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 20635446323 - 2¹² = 20635442227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20635446313) 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, 53459513 + ... + 53459898.

It is an arithmetic number, because the mean of its divisors is an integer number (5185591482).

Almost surely, 2^20635446323 is an apocalyptic number.

20635446323 is a deficient number, since it is larger than the sum of its proper divisors (106919605).

20635446323 is a wasteful number, since it uses less digits than its factorization.

20635446323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106919604.

The product of its (nonzero) digits is 311040, while the sum is 38.

Adding to 20635446323 its reverse (32364453602), we get a palindrome (52999899925).

The spelling of 20635446323 in words is "twenty billion, six hundred thirty-five million, four hundred forty-six thousand, three hundred twenty-three".