20542044210 has 16 divisors (see below), whose sum is σ = 49300906176. Its totient is φ = 5477878448.

The previous prime is 20542044209. The next prime is 20542044221. The reversal of 20542044210 is 1244024502.

It is a happy number.

It is a Curzon number.

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, 342367374 + ... + 342367433.

It is an arithmetic number, because the mean of its divisors is an integer number (3081306636).

Almost surely, 2^20542044210 is an apocalyptic number.

20542044210 is an abundant number, since it is smaller than the sum of its proper divisors (28758861966).

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

20542044210 is a wasteful number, since it uses less digits than its factorization.

20542044210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684734817.

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 20542044210 its reverse (1244024502), we get a palindrome (21786068712).

The spelling of 20542044210 in words is "twenty billion, five hundred forty-two million, forty-four thousand, two hundred ten".