20384009123 has 2 divisors, whose sum is σ = 20384009124. Its totient is φ = 20384009122.

The previous prime is 20384009081. The next prime is 20384009131. The reversal of 20384009123 is 32190048302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20384009123 - 2⁶ = 20384009059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20384009123.

It is not a weakly prime, because it can be changed into another prime (20384009323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10192004561 + 10192004562.

It is an arithmetic number, because the mean of its divisors is an integer number (10192004562).

Almost surely, 2^20384009123 is an apocalyptic number.

20384009123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20384009123 is an equidigital number, since it uses as much as digits as its factorization.

20384009123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 20384009123 in words is "twenty billion, three hundred eighty-four million, nine thousand, one hundred twenty-three".