20093784847 has 2 divisors, whose sum is σ = 20093784848. Its totient is φ = 20093784846.

The previous prime is 20093784827. The next prime is 20093784863. The reversal of 20093784847 is 74848739002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20093784847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20093784794 and 20093784803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20093784827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10046892423 + 10046892424.

It is an arithmetic number, because the mean of its divisors is an integer number (10046892424).

Almost surely, 2^20093784847 is an apocalyptic number.

20093784847 is a deficient number, since it is larger than the sum of its proper divisors (1).

20093784847 is an equidigital number, since it uses as much as digits as its factorization.

20093784847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 20093784847 in words is "twenty billion, ninety-three million, seven hundred eighty-four thousand, eight hundred forty-seven".