20356103641 has 8 divisors (see below), whose sum is σ = 20494720064. Its totient is φ = 20217774960.

The previous prime is 20356103639. The next prime is 20356103657. The reversal of 20356103641 is 14630165302.

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 20356103641 - 2¹ = 20356103639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20356103611) 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, 70996 + ... + 213898.

It is an arithmetic number, because the mean of its divisors is an integer number (2561840008).

Almost surely, 2^20356103641 is an apocalyptic number.

It is an amenable number.

20356103641 is a deficient number, since it is larger than the sum of its proper divisors (138616423).

20356103641 is a wasteful number, since it uses less digits than its factorization.

20356103641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143871.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 20356103641 its reverse (14630165302), we get a palindrome (34986268943).

The spelling of 20356103641 in words is "twenty billion, three hundred fifty-six million, one hundred three thousand, six hundred forty-one".