20061641341556 has 12 divisors (see below), whose sum is σ = 35137104556260. Its totient is φ = 10022468611200.

The previous prime is 20061641341529. The next prime is 20061641341561. The reversal of 20061641341556 is 65514314616002.

It can be written as a sum of positive squares in 2 ways, for example, as 5424008102500 + 14637633239056 = 2328950^2 + 3825916^2 .

It is a super-2 number, since 2×20061641341556² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2088009491 + ... + 2088019098.

It is an arithmetic number, because the mean of its divisors is an integer number (2928092046355).

Almost surely, 2^{20061641341556} is an apocalyptic number.

It is an amenable number.

20061641341556 is a deficient number, since it is larger than the sum of its proper divisors (15075463214704).

20061641341556 is a wasteful number, since it uses less digits than its factorization.

20061641341556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176029794 (or 4176029792 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

Adding to 20061641341556 its reverse (65514314616002), we get a palindrome (85575955957558).

The spelling of 20061641341556 in words is "twenty trillion, sixty-one billion, six hundred forty-one million, three hundred forty-one thousand, five hundred fifty-six".