20520501205334 has 16 divisors (see below), whose sum is σ = 33148742674320. Its totient is φ = 9470931777120.

The previous prime is 20520501205307. The next prime is 20520501205367. The reversal of 20520501205334 is 43350210502502.

It is a super-2 number, since 2×20520501205334² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20520501205334.

It is a congruent 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, 875444 + ... + 6465864.

It is an arithmetic number, because the mean of its divisors is an integer number (2071796417145).

Almost surely, 2^{20520501205334} is an apocalyptic number.

20520501205334 is a deficient number, since it is larger than the sum of its proper divisors (12628241468986).

20520501205334 is a wasteful number, since it uses less digits than its factorization.

20520501205334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5731615.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 20520501205334 its reverse (43350210502502), we get a palindrome (63870711707836).

The spelling of 20520501205334 in words is "twenty trillion, five hundred twenty billion, five hundred one million, two hundred five thousand, three hundred thirty-four".