20555250022433 has 8 divisors (see below), whose sum is σ = 23971137052800. Its totient is φ = 17618785733220.

The previous prime is 20555250022397. The next prime is 20555250022457. The reversal of 20555250022433 is 33422005255502.

It is a de Polignac number, because none of the positive numbers 2^k-20555250022433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20555250012433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29963920973 + ... + 29963921658.

It is an arithmetic number, because the mean of its divisors is an integer number (2996392131600).

Almost surely, 2^{20555250022433} is an apocalyptic number.

It is an amenable number.

20555250022433 is a deficient number, since it is larger than the sum of its proper divisors (3415887030367).

20555250022433 is an frugal number, since it uses more digits than its factorization.

20555250022433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59927842652 (or 59927842638 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 38.

Adding to 20555250022433 its reverse (33422005255502), we get a palindrome (53977255277935).

The spelling of 20555250022433 in words is "twenty trillion, five hundred fifty-five billion, two hundred fifty million, twenty-two thousand, four hundred thirty-three".