20135222445740 has 24 divisors (see below), whose sum is σ = 42460887510720. Its totient is φ = 8020389859328.

The previous prime is 20135222445677. The next prime is 20135222445797. The reversal of 20135222445740 is 4754422253102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2106190037 + ... + 2106199596.

It is an arithmetic number, because the mean of its divisors is an integer number (1769203646280).

Almost surely, 2^{20135222445740} is an apocalyptic number.

20135222445740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20135222445740 is an abundant number, since it is smaller than the sum of its proper divisors (22325665064980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20135222445740 is a wasteful number, since it uses less digits than its factorization.

20135222445740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212389881 (or 4212389879 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 41.

Adding to 20135222445740 its reverse (4754422253102), we get a palindrome (24889644698842).

The spelling of 20135222445740 in words is "twenty trillion, one hundred thirty-five billion, two hundred twenty-two million, four hundred forty-five thousand, seven hundred forty".