20216775026641 has 8 divisors (see below), whose sum is σ = 20663011926144. Its totient is φ = 19771208658480.

The previous prime is 20216775026629. The next prime is 20216775026687. The reversal of 20216775026641 is 14662057761202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20216775026641 - 2²¹ = 20216772929489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20216775026141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167571870 + ... + 167692471.

It is an arithmetic number, because the mean of its divisors is an integer number (2582876490768).

Almost surely, 2^{20216775026641} is an apocalyptic number.

It is an amenable number.

20216775026641 is a deficient number, since it is larger than the sum of its proper divisors (446236899503).

20216775026641 is a wasteful number, since it uses less digits than its factorization.

20216775026641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335265671.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 20216775026641 in words is "twenty trillion, two hundred sixteen billion, seven hundred seventy-five million, twenty-six thousand, six hundred forty-one".