20611606361 has 8 divisors (see below), whose sum is σ = 21850978464. Its totient is φ = 19375225920.

The previous prime is 20611606343. The next prime is 20611606373. The reversal of 20611606361 is 16360611602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20611606361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20611605361) 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, 733715 + ... + 761288.

It is an arithmetic number, because the mean of its divisors is an integer number (2731372308).

Almost surely, 2^20611606361 is an apocalyptic number.

It is an amenable number.

20611606361 is a deficient number, since it is larger than the sum of its proper divisors (1239372103).

20611606361 is a wasteful number, since it uses less digits than its factorization.

20611606361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495831.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 20611606361 in words is "twenty billion, six hundred eleven million, six hundred six thousand, three hundred sixty-one".