20445120550 has 48 divisors (see below), whose sum is σ = 40283738640. Its totient is φ = 7693378560.

The previous prime is 20445120539. The next prime is 20445120569. The reversal of 20445120550 is 5502154402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2424241 + ... + 2432659.

It is an arithmetic number, because the mean of its divisors is an integer number (839244555).

Almost surely, 2^20445120550 is an apocalyptic number.

20445120550 is a deficient number, since it is larger than the sum of its proper divisors (19838618090).

20445120550 is a wasteful number, since it uses less digits than its factorization.

20445120550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11305 (or 11300 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 20445120550 its reverse (5502154402), we get a palindrome (25947274952).

The spelling of 20445120550 in words is "twenty billion, four hundred forty-five million, one hundred twenty thousand, five hundred fifty".