20354665606201 has 8 divisors (see below), whose sum is σ = 21552041013480. Its totient is φ = 19157294880768.

The previous prime is 20354665606193. The next prime is 20354665606241. The reversal of 20354665606201 is 10260656645302.

It can be written as a sum of positive squares in 4 ways, for example, as 1752179042601 + 18602486563600 = 1323699^2 + 4313060^2 .

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 20354665606201 - 2³ = 20354665606193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20354665606241) 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, 12041505 + ... + 13627441.

It is an arithmetic number, because the mean of its divisors is an integer number (2694005126685).

Almost surely, 2^{20354665606201} is an apocalyptic number.

It is an amenable number.

20354665606201 is a deficient number, since it is larger than the sum of its proper divisors (1197375407279).

20354665606201 is a wasteful number, since it uses less digits than its factorization.

20354665606201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340923.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 20354665606201 in words is "twenty trillion, three hundred fifty-four billion, six hundred sixty-five million, six hundred six thousand, two hundred one".