164091058816 has 32 divisors (see below), whose sum is σ = 326927171700. Its totient is φ = 82038749184.

The previous prime is 164091058771. The next prime is 164091058837. The reversal of 164091058816 is 618850190461.

It can be written as a sum of positive squares in 2 ways, for example, as 147425281600 + 16665777216 = 383960^2 + 129096^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 164091058816.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1737420 + ... + 1829428.

Almost surely, 2^164091058816 is an apocalyptic number.

164091058816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

164091058816 is a deficient number, since it is larger than the sum of its proper divisors (162836112884).

164091058816 is an equidigital number, since it uses as much as digits as its factorization.

164091058816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105956 (or 105944 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 164091058816 in words is "one hundred sixty-four billion, ninety-one million, fifty-eight thousand, eight hundred sixteen".