165468558001 has 4 divisors (see below), whose sum is σ = 165912173812. Its totient is φ = 165024942192.

The previous prime is 165468557981. The next prime is 165468558071. The reversal of 165468558001 is 100855864561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141752250000 + 23716308001 = 376500^2 + 154001^2 .

It is a cyclic number.

It is not a de Polignac number, because 165468558001 - 2¹¹ = 165468555953 is a prime.

It is a super-2 number, since 2×165468558001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165468558071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221807346 + ... + 221808091.

It is an arithmetic number, because the mean of its divisors is an integer number (41478043453).

Almost surely, 2^165468558001 is an apocalyptic number.

It is an amenable number.

165468558001 is a deficient number, since it is larger than the sum of its proper divisors (443615811).

165468558001 is an equidigital number, since it uses as much as digits as its factorization.

165468558001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443615810.

The product of its (nonzero) digits is 1152000, while the sum is 49.

The spelling of 165468558001 in words is "one hundred sixty-five billion, four hundred sixty-eight million, five hundred fifty-eight thousand, one".