20336194147 has 2 divisors, whose sum is σ = 20336194148. Its totient is φ = 20336194146.

The previous prime is 20336194139. The next prime is 20336194159. The reversal of 20336194147 is 74149163302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20336194147 - 2³ = 20336194139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20336194127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10168097073 + 10168097074.

It is an arithmetic number, because the mean of its divisors is an integer number (10168097074).

Almost surely, 2^20336194147 is an apocalyptic number.

20336194147 is a deficient number, since it is larger than the sum of its proper divisors (1).

20336194147 is an equidigital number, since it uses as much as digits as its factorization.

20336194147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 20336194147 in words is "twenty billion, three hundred thirty-six million, one hundred ninety-four thousand, one hundred forty-seven".