20422333555 has 16 divisors (see below), whose sum is σ = 26395123104. Its totient is φ = 15079288320.

The previous prime is 20422333553. The next prime is 20422333567. The reversal of 20422333555 is 55533322402.

It is a happy number.

It is not a de Polignac number, because 20422333555 - 2¹ = 20422333553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20422333555.

It is not an unprimeable number, because it can be changed into a prime (20422333553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782832 + ... + 808498.

It is an arithmetic number, because the mean of its divisors is an integer number (1649695194).

Almost surely, 2^20422333555 is an apocalyptic number.

20422333555 is a deficient number, since it is larger than the sum of its proper divisors (5972789549).

20422333555 is a wasteful number, since it uses less digits than its factorization.

20422333555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37926.

The product of its (nonzero) digits is 108000, while the sum is 34.

Adding to 20422333555 its reverse (55533322402), we get a palindrome (75955655957).

The spelling of 20422333555 in words is "twenty billion, four hundred twenty-two million, three hundred thirty-three thousand, five hundred fifty-five".