20868103730645 has 16 divisors (see below), whose sum is σ = 25708425228288. Its totient is φ = 16253735208960.

The previous prime is 20868103730641. The next prime is 20868103730653. The reversal of 20868103730645 is 54603730186802.

It is a happy number.

It is not a de Polignac number, because 20868103730645 - 2² = 20868103730641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20868103730641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232417004 + ... + 232506773.

It is an arithmetic number, because the mean of its divisors is an integer number (1606776576768).

Almost surely, 2^{20868103730645} is an apocalyptic number.

It is an amenable number.

20868103730645 is a deficient number, since it is larger than the sum of its proper divisors (4840321497643).

20868103730645 is a wasteful number, since it uses less digits than its factorization.

20868103730645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464924020.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 20868103730645 in words is "twenty trillion, eight hundred sixty-eight billion, one hundred three million, seven hundred thirty thousand, six hundred forty-five".