20422204432545 has 16 divisors (see below), whose sum is σ = 32675699740032. Its totient is φ = 10891784814720.

The previous prime is 20422204432541. The next prime is 20422204432613. The reversal of 20422204432545 is 54523440222402.

It is not a de Polignac number, because 20422204432545 - 2² = 20422204432541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20422204432541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581757 + ... + 6417386.

It is an arithmetic number, because the mean of its divisors is an integer number (2042231233752).

Almost surely, 2^{20422204432545} is an apocalyptic number.

It is an amenable number.

20422204432545 is a deficient number, since it is larger than the sum of its proper divisors (12253495307487).

20422204432545 is a wasteful number, since it uses less digits than its factorization.

20422204432545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7193672.

The product of its (nonzero) digits is 614400, while the sum is 39.

Adding to 20422204432545 its reverse (54523440222402), we get a palindrome (74945644654947).

The spelling of 20422204432545 in words is "twenty trillion, four hundred twenty-two billion, two hundred four million, four hundred thirty-two thousand, five hundred forty-five".