20201016702506 has 16 divisors (see below), whose sum is σ = 31660099732800. Its totient is φ = 9648792265728.

The previous prime is 20201016702481. The next prime is 20201016702539. The reversal of 20201016702506 is 60520761010202.

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, 285499436 + ... + 285570183.

It is an arithmetic number, because the mean of its divisors is an integer number (1978756233300).

Almost surely, 2^{20201016702506} is an apocalyptic number.

20201016702506 is a deficient number, since it is larger than the sum of its proper divisors (11459083030294).

20201016702506 is a wasteful number, since it uses less digits than its factorization.

20201016702506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571070413.

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 20201016702506 its reverse (60520761010202), we get a palindrome (80721777712708).

The spelling of 20201016702506 in words is "twenty trillion, two hundred one billion, sixteen million, seven hundred two thousand, five hundred six".