164340663626563 has 4 divisors (see below), whose sum is σ = 164349900936448. Its totient is φ = 164331426316680.

The previous prime is 164340663626509. The next prime is 164340663626591. The reversal of 164340663626563 is 365626366043461.

164340663626563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-164340663626563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164340663626963) 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, 4618628256 + ... + 4618663837.

It is an arithmetic number, because the mean of its divisors is an integer number (41087475234112).

Almost surely, 2^{164340663626563} is an apocalyptic number.

164340663626563 is a deficient number, since it is larger than the sum of its proper divisors (9237309885).

164340663626563 is an equidigital number, since it uses as much as digits as its factorization.

164340663626563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9237309884.

The product of its (nonzero) digits is 201553920, while the sum is 61.

The spelling of 164340663626563 in words is "one hundred sixty-four trillion, three hundred forty billion, six hundred sixty-three million, six hundred twenty-six thousand, five hundred sixty-three".