20822820446 has 4 divisors (see below), whose sum is σ = 31234230672. Its totient is φ = 10411410222.

The previous prime is 20822820443. The next prime is 20822820503. The reversal of 20822820446 is 64402822802.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20822820443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5205705110 + ... + 5205705113.

It is an arithmetic number, because the mean of its divisors is an integer number (7808557668).

Almost surely, 2^20822820446 is an apocalyptic number.

20822820446 is a deficient number, since it is larger than the sum of its proper divisors (10411410226).

20822820446 is a wasteful number, since it uses less digits than its factorization.

20822820446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10411410225.

The product of its (nonzero) digits is 98304, while the sum is 38.

The spelling of 20822820446 in words is "twenty billion, eight hundred twenty-two million, eight hundred twenty thousand, four hundred forty-six".