20422773057447 has 12 divisors (see below), whose sum is σ = 29499959920704. Its totient is φ = 13614997959360.

The previous prime is 20422773057439. The next prime is 20422773057509. The reversal of 20422773057447 is 74475037722402.

20422773057447 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 27 + 7 + 3 + 0 + 574 + 47 = 666.

It is not a de Polignac number, because 20422773057447 - 2³ = 20422773057439 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20422773057393 and 20422773057402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422773056447) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 14635554 + ... + 15970127.

It is an arithmetic number, because the mean of its divisors is an integer number (2458329993392).

Almost surely, 2^{20422773057447} is an apocalyptic number.

20422773057447 is a deficient number, since it is larger than the sum of its proper divisors (9077186863257).

20422773057447 is a wasteful number, since it uses less digits than its factorization.

20422773057447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30679830 (or 30679827 counting only the distinct ones).

The product of its (nonzero) digits is 18439680, while the sum is 54.

The spelling of 20422773057447 in words is "twenty trillion, four hundred twenty-two billion, seven hundred seventy-three million, fifty-seven thousand, four hundred forty-seven".