20411022423661 has 4 divisors (see below), whose sum is σ = 20412215579392. Its totient is φ = 20409829267932.

The previous prime is 20411022423643. The next prime is 20411022423683. The reversal of 20411022423661 is 16632422011402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20411022423661 - 2¹⁷ = 20411022292589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411022423061) 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, 596552205 + ... + 596586418.

It is an arithmetic number, because the mean of its divisors is an integer number (5103053894848).

Almost surely, 2^{20411022423661} is an apocalyptic number.

It is an amenable number.

20411022423661 is a deficient number, since it is larger than the sum of its proper divisors (1193155731).

20411022423661 is a wasteful number, since it uses less digits than its factorization.

20411022423661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193155730.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 20411022423661 in words is "twenty trillion, four hundred eleven billion, twenty-two million, four hundred twenty-three thousand, six hundred sixty-one".