220786537540106 has 4 divisors (see below), whose sum is σ = 331179806310162. Its totient is φ = 110393268770052.

The previous prime is 220786537540103. The next prime is 220786537540117. The reversal of 220786537540106 is 601045735687022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 209605505662081 + 11181031878025 = 14477759^2 + 3343805^2 .

It is not an unprimeable number, because it can be changed into a prime (220786537540103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55196634385025 + ... + 55196634385028.

Almost surely, 2^{220786537540106} is an apocalyptic number.

220786537540106 is a deficient number, since it is larger than the sum of its proper divisors (110393268770056).

220786537540106 is a wasteful number, since it uses less digits than its factorization.

220786537540106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110393268770055.

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 220786537540106 in words is "two hundred twenty trillion, seven hundred eighty-six billion, five hundred thirty-seven million, five hundred forty thousand, one hundred six".