20013735434347 has 4 divisors (see below), whose sum is σ = 20883897844560. Its totient is φ = 19143573024136.

The previous prime is 20013735434311. The next prime is 20013735434369. The reversal of 20013735434347 is 74343453731002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20013735434347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20013735434297 and 20013735434306.

It is not an unprimeable number, because it can be changed into a prime (20013735434377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435081205072 + ... + 435081205117.

It is an arithmetic number, because the mean of its divisors is an integer number (5220974461140).

Almost surely, 2^{20013735434347} is an apocalyptic number.

20013735434347 is a deficient number, since it is larger than the sum of its proper divisors (870162410213).

20013735434347 is an equidigital number, since it uses as much as digits as its factorization.

20013735434347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870162410212.

The product of its (nonzero) digits is 2540160, while the sum is 46.

The spelling of 20013735434347 in words is "twenty trillion, thirteen billion, seven hundred thirty-five million, four hundred thirty-four thousand, three hundred forty-seven".