20013700426643 has 8 divisors (see below), whose sum is σ = 24952145986560. Its totient is φ = 15595091241480.

The previous prime is 20013700426591. The next prime is 20013700426663. The reversal of 20013700426643 is 34662400731002.

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 20013700426643 - 2³⁰ = 20012626684819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20013700426597 and 20013700426606.

It is not an unprimeable number, because it can be changed into a prime (20013700426663) 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, 129959093603 + ... + 129959093756.

It is an arithmetic number, because the mean of its divisors is an integer number (3119018248320).

Almost surely, 2^{20013700426643} is an apocalyptic number.

20013700426643 is a deficient number, since it is larger than the sum of its proper divisors (4938445559917).

20013700426643 is a wasteful number, since it uses less digits than its factorization.

20013700426643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259918187377.

The product of its (nonzero) digits is 145152, while the sum is 38.

The spelling of 20013700426643 in words is "twenty trillion, thirteen billion, seven hundred million, four hundred twenty-six thousand, six hundred forty-three".