164447966638079 has 8 divisors (see below), whose sum is σ = 169155989150448. Its totient is φ = 159753811645440.

The previous prime is 164447966638051. The next prime is 164447966638091. The reversal of 164447966638079 is 970836669744461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164447966638079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164447966637994 and 164447966638012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164447966638979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3466855877 + ... + 3466903310.

It is an arithmetic number, because the mean of its divisors is an integer number (21144498643806).

Almost surely, 2^{164447966638079} is an apocalyptic number.

164447966638079 is a deficient number, since it is larger than the sum of its proper divisors (4708022512369).

164447966638079 is an equidigital number, since it uses as much as digits as its factorization.

164447966638079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6933759865.

The product of its (nonzero) digits is 7900913664, while the sum is 80.

The spelling of 164447966638079 in words is "one hundred sixty-four trillion, four hundred forty-seven billion, nine hundred sixty-six million, six hundred thirty-eight thousand, seventy-nine".