20164506347 has 2 divisors, whose sum is σ = 20164506348. Its totient is φ = 20164506346.

The previous prime is 20164506337. The next prime is 20164506437. The reversal of 20164506347 is 74360546102.

It is a happy number.

Together with next prime (20164506437) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20164506347 - 2¹⁴ = 20164489963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20164506347.

It is not a weakly prime, because it can be changed into another prime (20164506337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10082253173 + 10082253174.

It is an arithmetic number, because the mean of its divisors is an integer number (10082253174).

Almost surely, 2^20164506347 is an apocalyptic number.

20164506347 is a deficient number, since it is larger than the sum of its proper divisors (1).

20164506347 is an equidigital number, since it uses as much as digits as its factorization.

20164506347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 20164506347 in words is "twenty billion, one hundred sixty-four million, five hundred six thousand, three hundred forty-seven".