164858297805 has 18 divisors (see below), whose sum is σ = 285759104046. Its totient is φ = 87922972848.

The previous prime is 164858297797. The next prime is 164858297819. The reversal of 164858297805 is 508792858461.

164858297805 is a `hidden beast` number, since 1 + 6 + 48 + 582 + 9 + 7 + 8 + 0 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 131886638244 + 32971659561 = 363162^2 + 181581^2 .

It is not a de Polignac number, because 164858297805 - 2³ = 164858297797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2693452 + ... + 2753978.

Almost surely, 2^164858297805 is an apocalyptic number.

164858297805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164858297805 is a deficient number, since it is larger than the sum of its proper divisors (120900806241).

164858297805 is an frugal number, since it uses more digits than its factorization.

164858297805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121065 (or 60535 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 164858297805 in words is "one hundred sixty-four billion, eight hundred fifty-eight million, two hundred ninety-seven thousand, eight hundred five".