20520502206042 has 16 divisors (see below), whose sum is σ = 41193573204960. Its totient is φ = 6814739269872.

The previous prime is 20520502206019. The next prime is 20520502206067. The reversal of 20520502206042 is 24060220502502.

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, 6357031288 + ... + 6357034515.

It is an arithmetic number, because the mean of its divisors is an integer number (2574598325310).

Almost surely, 2^{20520502206042} is an apocalyptic number.

20520502206042 is an abundant number, since it is smaller than the sum of its proper divisors (20673070998918).

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

20520502206042 is a wasteful number, since it uses less digits than its factorization.

20520502206042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12714066077.

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

Adding to 20520502206042 its reverse (24060220502502), we get a palindrome (44580722708544).

The spelling of 20520502206042 in words is "twenty trillion, five hundred twenty billion, five hundred two million, two hundred six thousand, forty-two".