164066161605 has 32 divisors (see below), whose sum is σ = 263247567744. Its totient is φ = 87254931456.

The previous prime is 164066161583. The next prime is 164066161607. The reversal of 164066161605 is 506161660461.

It is not a de Polignac number, because 164066161605 - 2¹¹ = 164066159557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164066161607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15433302 + ... + 15443928.

It is an arithmetic number, because the mean of its divisors is an integer number (8226486492).

Almost surely, 2^164066161605 is an apocalyptic number.

164066161605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164066161605 is a deficient number, since it is larger than the sum of its proper divisors (99181406139).

164066161605 is a wasteful number, since it uses less digits than its factorization.

164066161605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13445.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 164066161605 in words is "one hundred sixty-four billion, sixty-six million, one hundred sixty-one thousand, six hundred five".