164405566063 has 8 divisors (see below), whose sum is σ = 166728329856. Its totient is φ = 162083002200.

The previous prime is 164405566007. The next prime is 164405566141. The reversal of 164405566063 is 360665504461.

It is a happy number.

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-164405566063 is a prime.

It is a super-3 number, since 3×164405566063³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164405566363) 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, 2564308 + ... + 2627638.

It is an arithmetic number, because the mean of its divisors is an integer number (20841041232).

Almost surely, 2^164405566063 is an apocalyptic number.

164405566063 is a deficient number, since it is larger than the sum of its proper divisors (2322763793).

164405566063 is an equidigital number, since it uses as much as digits as its factorization.

164405566063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99965.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 164405566063 in words is "one hundred sixty-four billion, four hundred five million, five hundred sixty-six thousand, sixty-three".