20530542240210 has 32 divisors (see below), whose sum is σ = 49826933982720. Its totient is φ = 5413296530048.

The previous prime is 20530542240203. The next prime is 20530542240217. The reversal of 20530542240210 is 1204224503502.

It is an interprime number because it is at equal distance from previous prime (20530542240203) and next prime (20530542240217).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (20530542240217) 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, 3844668162 + ... + 3844673501.

It is an arithmetic number, because the mean of its divisors is an integer number (1557091686960).

Almost surely, 2^{20530542240210} is an apocalyptic number.

20530542240210 is an abundant number, since it is smaller than the sum of its proper divisors (29296391742510).

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

20530542240210 is a wasteful number, since it uses less digits than its factorization.

20530542240210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7689341762.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20530542240210 its reverse (1204224503502), we get a palindrome (21734766743712).

The spelling of 20530542240210 in words is "twenty trillion, five hundred thirty billion, five hundred forty-two million, two hundred forty thousand, two hundred ten".